Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download ""

Transcription

1 W A T E R Q U A L I T Y Acid Rain Riddle

2 ACID RAIN RIDDLE WATER QUALITY Grades 5 8 Grade Levels Time Required One 50-minute session National Science Standards Water Quality UCPs 1-5 Content Standard A A-1:1-6 A-2:1-6 Content Standard B B-1:1 B-1:3 B-2:4 B-2:5 B-3:1 B-3:3 Content Standard C C-4:1 C-5:5 Content Standard D D-2:1 Content Standard E E-1:1-5 E-2:1-4 Content Standard F F-2:3 F-3:1-3 F-4:1-3 F-5:2 F-6:1-5 Content Standard G G-1:3 G-2:1-3 G-3:2-3 Please see the Standards Section for additional Standards achieved, specifically the: National Science Teaching Standards NCTM Mathematics Standards National Education Technology Standards Information Literacy Standards The Standards achieved are followed by a PASCO Coding Legend for each set of Standards. Overview Students will observe the effect of acid rain on water from three water sources, and determine that the water from a clear mountain lake is most affected by the addition of acid rain. Moreover, students will learn that there are natural processes in some bodies of water that provide natural buffering to acid rain. Learning Goals Students will: Determine the ph of three water samples, representing water from a clear mountain lake, a pond, and the ocean. Add a small amount of acid to the first sample, and measure the ph. Repeat the procedure for each of the samples. Determine that the sample from the ocean recovers from the addition of the acid because of the natural buffering processes that occur in the water. Relate ph to level of acidity. Recognize that acid rain can change the ph level of a natural water body. 77 Teacher Information Pages

3 WATER QUALITY Background Acid rain? What is it? First of all, it is handy to know a little bit about the terms acid, base, and neutral. So here is an overview of the measurement of acids and bases called ph. A little bit about ph ph is a measure of the number of hydrogen ions present in a substance. The ph scale goes from zero (corresponding to a very acidic substance) to 14 (the strongest base measurement). A substance which is neutral (neither acidic nor basic) has a ph of 7. Pure water is neutral, and therefore, has a ph of 7. From a practical standpoint, the neutral zone is considered to be the range between and Anything with a ph below 7 is acidic; above 7 means that the substance is basic. A CID RAIN RIDDLE acid rain alkaline base basic buffer neutral snert Vocabulary See Glossary for vocabulary definitions Materials Acids: Have free hydrogen ions; Taste sour; Turn litmus paper red; Bases: Have a ph above 7; Absorb hydrogen ions; Taste bitter; Feel slippery, like soap; Turn litmus paper blue. PASCO Equipment for Acid Rain Riddle Activity PASPORT USB Link or Xplorer PASPORT ph Sensor DataStudio software General Equipment Computer with USB port scissors three water samples representing: -high mountain streams -valley pond water -ocean water (see recipes if not locally available) white vinegar paper towels DataStudio Workbook: Acid Rain Riddle Team Response Sheet: Acid Rain Riddle Student Information Sheet: Acid Rain Riddle Teacher Information Pages 78

4 ACID RAIN RIDDLE WATER QUALITY Teacher Tip Classrooms with limited computer resources: If student groups do not have access to a computer, use the Xplorer to collect the data. Set the Xplorer to collect single data points, and record the data point when the reading stabilizes. Provide students with a paper copy of the DataStudio Workbook to guide them during the activity. Now that we know a little about ph: What is acid rain? Rain is naturally slightly acidic because carbon dioxide in the atmosphere dissolves in rainwater and forms a weak acid. This slightly acidic rain is actually beneficial because it helps dissolve minerals in the soil that plants and animals need. However, when rain s ph falls below 5.5, it is called acid rain and it can be harmful to the environment. Acid rain can adversely affect aquatic wildlife, forests, and manmade structures such as monuments and statues. What causes acid rain? Acid rain is formed when moisture in the atmosphere reacts with substances such as sulphur dioxide and nitrogen oxide, resulting in precipitation that is acidic. (Just for fun: Do you know what acidic snow is called? Answer: Snert). 79 Teacher Information Pages

5 WATER QUALITY A CID RAIN RIDDLE What level of ph is safe? Okay, this concept of safe is going to keep coming up. The answer is: it depends on the use of the water. Something that is safe for one use may not be safe for another. For example, some types of plants need acid to do well. If you have gardenias and azaleas, there is special fertilizer that is acidic, and the plants grow well and will produce beautiful flowers when given acid in their water. On the other hand, insects (which are food for fish in lakes) will not survive in water that is acidic. Table 1 shows the effects of ph levels on aquatic organisms. Another thing to keep in mind is that some rocks contain heavy metals, which can be toxic to aquatic organisms. And rocks and minerals are more easily dissolved in an acidic environment. This means that if a lake becomes acidic, the creatures living in the lake may not survive. But even if they survive, the acid may cause heavy metals from the rocks around the lake to dissolve, which then would cause additional problems for the creatures. So maybe they could survive the change in ph, but the addition of heavy metals might create problems. ph Level Table 1: Effects of too much acid in the water <6.0 Basic forms of food die off. (Mayflies and stoneflies are important food sources for fish, and the flies cannot survive at this ph level). <5.5 Fish cannot reproduce. Young fish have difficulty surviving. Lack of available nutrients result in deformed adult fish. Fish die of suffocation. <5.0 Fish population dies off. Teacher Tip Recipe for Pond Water If you do not have a source for pond water, you can easily make some. Mix: 1 L deionized water 60 mg NaCl 6 g ground oyster shells (from your local garden supply store) Filter this mixture. The resulting conductivity will be similar to a typical valley pond ( µS/cm). Teacher Tip Recipe for Mountain Lake or Stream Water If you do not have a source for high mountain water, you can easily make some. Mix: 20 ml of the artificial pond water (from the recipe above) 250 ml deionized water or filtered tap water. What things can affect the ph of a body of water? Glad you asked. Things that affect the ph level of water fall into 2 categories: (1) natural, and (2) man-caused. Teacher Information Pages 80

6 ACID RAIN RIDDLE WATER QUALITY Teacher Tip Recipes for Ocean Water If you do not have a source for ocean water, you can easily make some g Instant Ocean (sold at most stores that sell fish and aquarium supplies) 1 L deionized water or filtered tap water. You will have a solution that is very close in composition to ocean water Alternatively mix: 35 g table salt (NaCl) 6 g ground oyster shells 1 L deionized or filtered tap water Filter this mixture You will have a buffered solution that has a salinity close to that of ocean water. Of course, the real thing is always best! The naturally occurring things include: Types of rocks and soils near the water body. Some types of rocks, such as limestone, contain chemicals that act as a buffer. A buffer is a solution to which an acid can be added without changing the ph very much. A buffer essentially absorbs the excess H + ions and protects the body of water from fluctuations in ph. So, water in areas that have a lot of limestone rock is naturally buffered and protected from changes in ph when acid is added. If, on the other hand, the rocks near the water body do not dissolve easily (such as granite), the natural buffering does not occur. The ph of the water would be more influenced by outside factors. If an acid were added to water in this region, the ph would likely become more acidic. Biological activities of plants and animals in the water. When plants and animals respire, carbon dioxide is produced, and carbolic acid is produced when carbon dioxide is dissolved in water. This causes the water to become acidic (the ph increases). So think of what this means plants and animals actually increase the acid level of the water. Man influences the ph of water bodies: directly by discharging waste in or near the body of water, and indirectly by influencing the ph of rain, which may fall into the body of water (acid rain). What is alkalinity? Alkalinity is the capability of water to neutralize acid. Some chemicals that are dissolved in water, such as calcium carbonate, increase the alkalinity of the water. Calcium carbonate is found in limestone. Water that has some alkalinity does not change its ph when acid is added through acid rain because the substances that produce the alkalinity act as a buffer and neutralize the acid. Water that has a high amount of alkalinity has a basic ph. 81 Teacher Information Pages

7 WATER QUALITY Engage Students will be asked to predict which will be more affected by acid rain: mountain stream water, pond water, or ocean water. They will be challenged to test and find out the answer. Explore The DataStudio Workbook has instructions for equipment setup. A CID RAIN RIDDLE Teacher Tip Recipe for Acid Rain You can simulate acid rain by mixing 1 part white table vinegar with 9 parts water. This mixture has a ph of about 3, which is about 10 times more acidic than the most acid of acid rain. If you choose to do a 1:99 dilution, the resulting acidity will be closer to actual acid rain, but you will have to add 10 times as much to your water samples to see the desired effect. The Acid Rain Student Instruction Sheet prompts students to assume a team role and provides students with step-bystep instructions for this activity. The Acid Rain Team Response Sheet will prompt students to analyze the results of this activity and provide you with assessment opportunities. The Acid Rain Riddle Information Sheet has information that students will need as they answer questions on the Team Response Sheet. Resources Go to our Resources Page on the Web to find links to related sites: Teacher Information Pages 82

8 ACID RAIN RIDDLE WATER QUALITY Assessment Formative assessment As students are working in their groups, circulate to determine if: Individual students are participating in the activity. Individual students are completing the responsibilities of the roles to which they have been assigned. Team members are discussing the worksheet and contributing to the formulation of answers. And pose questions such as: Which water is the most acidic? How do you know? Is there a difference in the sources of the water samples? What represents the acid rain? Do you think that any of the samples are pond water? Why or why not? Summative assessment Do the students understand that some waters are naturally buffered? Can they relate the experiment to real world situations? Are they able to determine which water sample represents the pond water? Extensions Have students design their own experiments to investigate the acid buffering capacity of water sources in your area. Students can do an Internet search on acid rain to find out more about the current global situation concerning acid rain. 83 Teacher Information Pages

9 WATER QUALITY ACID RAIN RIDDLE Acid Rain Riddle- Student Instruction Sheet Team Challenge Which water source is least affected by acid rain: mountain stream, pond, or ocean? Equipment and Materials Equipment Materials Computer with USB Port three water samples: (250 ml each) PASPORT USB Link or Xplorer -mountain stream water PASPORT ph Sensor -valley pond water DataStudio Software -ocean water ml beakers white table vinegar graduated cylinder paper towels beaker for waste water Acid Rain Riddle Student Instruction Sheet wash bottle Acid Rain Riddle Student Information Sheet Acid Rain Riddle Team Response Sheet Safety Precautions Computer Care: Use care when handling liquids near the computer. Follow the teacher s instructions for placement. Place the buffer storage solution for the ph sensor in a secure location. Student Instruction Sheet 84

10 A CID RAIN RIDDLE WATER QUALITY Procedure 1. Set up the equipment as shown in Figure Obtain 250 ml water samples from the three sources provided by the teacher. Label each beaker so that you don t mix up the sources of the sample. ph Sensor beaker with water sample 3. Open the DataStudio file: Acid Rain Riddle Figure 1. Setup for Acid Rain Riddle 4. Follow the directions in the DataStudio workbook. Make sure that you use the same amount of each sample of water and that you add the same amount of acid rain to each. 5. Answer the questions and complete the discussion on the Team Response Sheet. Remember to use the information that you gleaned from the Student Information Sheet. 6. Clean-up: Return all equipment and materials. Dispose of the water samples as directed by your teacher. Don t forget to rinse all of the glassware and the ph Sensor. Be sure you leave your area clean for the next class. 85 Student Instruction Sheet

11 WATER QUALITY ACID RAIN RIDDLE Name Period Team Response Sheet Teacher s Version Roles and Responsibilities Role Description of Responsibility Name of Assigned Team Member Team Leader/ Spokesperson Materials Organizer and Handler Data Recorder Equipment Operator Responsible for making sure the group stays on task and moves efficiently through the assignment; speaks for the group during class summaries. Responsible for getting the necessary equipment and materials for the station; oversees clean-up. Responsible for recording team consensus responses on the Team Response Sheets. Responsible for operating the ph Sensor and computer or Xplorer. Jeff Jonathan Rachel Jacob Predict Record the ph for each of the samples in the spaces provided. Predict what will happen to the ph when acid rain is added to the sample. Type of Water Sample Initial ph What do you think will happen to the ph when acid rain is added Mountain stream 8.3 The ph will go down. Pond 9.1 The ph will decrease a little bit. Ocean 8.4 The ph will go down a whole bunch. Team Response Sheet Teacher s Version 86

12 A CID RAIN RIDDLE WATER QUALITY Record Follow the instructions for adding acid rain to each of the water samples. Record the final ph for each sample. Type of Water Sample Initial ph Final ph Change in ph Mountain stream Pond Ocean Discuss Describe what happened to the ph of each of the samples. Did all of the samples respond in the same manner? Why do you think this happened? When we added the acid rain to the beakers, all of the water samples responded with a decrease in ph. This means that all of the water samples became more acidic. But the mountain stream water had the greatest change. The ph of mountain stream water went from 8.3 to 5.7, a decrease of 3.1. The change in pond water was 1.2 (it went from 8.8 to 7.6). Finally, the ocean water changed only slightly (from 8.2 to 7.8, a difference of 0.4). We talked about why the ocean water was not as impacted by the acid rain as the mountain stream water. One thought that we had was that since the ocean is so large, it wouldn t be impacted as much. But then we talked a little bit more and realized that we had used the same amount of water in our experiment, so that the size of the ocean wouldn t be a part of the effect (This has something to do with variables. We had the same amount of water in each of our samples, and used the same amount of acid rain, so that the only thing that we varied was the water sample itself.). This means that what was in each sample was what caused the differing effect of acid rain. All of the samples were at about the same temperature, so temperature wouldn t be a factor. We think that we need to find out what was in the water samples before we can figure out why there was such a difference in responses to acid rain. We are thinking that there must be something in the ocean water and the pond water that reacts with the acid rain so that the ph doesn t change as much as does the fresh mountain stream water. 87 Team Response Sheet Teacher s Version

13 WATER QUALITY A CID RAIN RIDDLE Name Roles and Responsibilities Period Team Response Sheet Role Description of Responsibility Name of Assigned Team Member Team Leader/ Spokesperson Materials Organizer and Handler Data Recorder Equipment Operator Responsible for making sure the group stays on task and moves efficiently through the assignment, speaks for the group during class summaries. Responsible for getting the necessary equipment and materials for the station. Oversees clean-up. Responsible for recording team consensus responses on the Team response sheets. Responsible for operating the ph Sensor and computer or Xplorer. Predict Record the ph for each of the samples in the spaces provided. Predict what will happen to the ph when acid rain is added to the sample. Type of Water Sample Initial ph What do you think will happen to the ph when acid rain is added Mountain stream Pond Ocean Team Response Sheet 88

14 A CID RAIN RIDDLE WATER QUALITY Record Follow the instructions for adding acid rain to each of the water samples. Record the final ph for each sample. Type of Water Sample Initial ph Final ph Change in ph Mountain stream Pond Ocean Discuss Describe what happened to the ph of each of the samples. Did all of the samples respond in the same manner? Why do you think this happened? 89 Team Response Sheet

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3 Solutions of Acids and Bases

3 Solutions of Acids and Bases CHAPTER 3 3 Solutions of Acids and Bases SECTION Chemical Compounds BEFORE YOU READ After you read this section, you should be able to answer these questions: What are strong and weak acids? What are strong

More information

Soil and Acid Rain. Evaluation copy. Figure 1: Typical Rain ph in United States

Soil and Acid Rain. Evaluation copy. Figure 1: Typical Rain ph in United States Soil and Acid Rain Computer 8 Acid rain can be very harmful to the environment. It can kill fish by lowering the ph of lakes and rivers. It can harm trees and plants by burning their leaves and depriving

More information

Neutralizing an Acid and a Base

Neutralizing an Acid and a Base Balancing Act Teacher Information Objectives In this activity, students neutralize a base with an acid. Students determine the point of neutralization of an acid mixed with a base while they: Recognize

More information

ph and Red Cabbage Juice

ph and Red Cabbage Juice Science Unit: Lesson 1: Water Quality ph and Red Cabbage Juice School year: 2004/2005 Developed for: Developed by: Grade level: Duration of lesson: Laura Secord Elementary School, Vancouver School District

More information

Acid Rain. Experiment 18 OBJECTIVES

Acid Rain. Experiment 18 OBJECTIVES Acid Rain Experiment 18 Acid rain is a topic of much concern in today s world. As carbon dioxide gas, CO 2, dissolves in water droplets of unpolluted air, the following reaction occurs: CO 2 + H 2 O H

More information

Properties of Acids and Bases

Properties of Acids and Bases Lab 22 Properties of Acids and Bases TN Standard 4.2: The student will investigate the characteristics of acids and bases. Have you ever brushed your teeth and then drank a glass of orange juice? What

More information

CHM 130LL: ph, Buffers, and Indicators

CHM 130LL: ph, Buffers, and Indicators CHM 130LL: ph, Buffers, and Indicators Many substances can be classified as acidic or basic. Acidic substances contain hydrogen ions, H +, while basic substances contain hydroxide ions, OH. The relative

More information

Water Quality Indicators Lab

Water Quality Indicators Lab Water Quality Indicators Lab Introduction Water is an essential resource for all life forms. In fact, water is the main component in cells and it composes up to 60 to 70 percent of the weight of living

More information

The Acid Test Grade Nine

The Acid Test Grade Nine Ohio Standards Connection: Physical Sciences Benchmark B Explain how atoms react with each other to form other substances and how molecules react with each other or other atoms to form even different substances.

More information

Introductory Chemistry

Introductory Chemistry Introductory Chemistry Lab 9: Acids and Bases Objectives Understand the properties and reactions of acids and bases Relate these properties to common household products Introduction Have you ever had

More information

This rain is known as acid rain.

This rain is known as acid rain. Rain is very important for life. All living things need water to live, even people. Rain brings us the water we need. But in many places in the world even where you live, rain has become a menace. Because

More information

ph Test #1: Scaling Common Liquids (From a series of 5)

ph Test #1: Scaling Common Liquids (From a series of 5) ph ph Test #1: Scaling Common Liquids (From a series of 5) Adapted from: Acid Tests in Environmental Education in the Schools. Braus, Judy and David Wood. Peace Corps, 1993. Grade Level: basic Duration:

More information

14. Double Replacement Reaction

14. Double Replacement Reaction DOUBLE TROUBLE 14. Double Replacement Reaction Double Trouble Student Instruction Sheet Challenge Use stoichiometry to determine the molar concentration of an acid solution by using it as an excess and

More information

Lesson 4: What Makes Water Healthy?

Lesson 4: What Makes Water Healthy? Lesson 4: What Makes Water Healthy? Activity: Students make observations and measurements of several water samples. This activity helps students think about different ways to determine water quality. Grade

More information

Urban Ecology: Watersheds and Aquatic Ecology A BIOBUGS program

Urban Ecology: Watersheds and Aquatic Ecology A BIOBUGS program NAME: Urban Ecology: Watersheds and Aquatic Ecology A BIOBUGS program Objective: To describe the health of the Muddy River in the Fens wetlands system of Boston by examining abiotic and biotic parameters.

More information

Lesson Plan: How Do We Know What is Healthy Water?

Lesson Plan: How Do We Know What is Healthy Water? Lesson Plan: How Do We Know What is Healthy Water? Estimated Time: 1-3 days ph /Chlorine / Hardness State Standards taught and addressed Grade 8: Standards Taught (and evaluated at end of lesson) Science

More information

A PRIMER ON ph. A Presentation for ASTA Conference September 30-October 1, 2008

A PRIMER ON ph. A Presentation for ASTA Conference September 30-October 1, 2008 A PRIMER ON ph A Presentation for ASTA Conference September 30-October 1, 2008 Rebecca Richardson Martha Gothard Director Science Specialist Regional In-Service Education Center AMSTI University of Montevallo

More information

Ah Clean Water! Making a Home-made Aquarium Water Filter

Ah Clean Water! Making a Home-made Aquarium Water Filter Name Period Date Ah Clean Water! Making a Home-made Aquarium Water Filter Objective The learner will construct a water filter and measure the effectiveness of the filter by comparing unfiltered aquarium

More information

Commensalism is a symbiotic relationship in which one organism benefits and the other organism is not affected.. What they might ask:

Commensalism is a symbiotic relationship in which one organism benefits and the other organism is not affected.. What they might ask: B-6.1 Explain how the interrelationships among organisms (including predation, competition, parasitism, mutualism, and commensalism) generate stability within ecosystems. ecosystem - biotic community (all

More information

ph Value of Common Household Items and the Environmental Effects ph on Water; http://www.epa.gov/acidrain/education/site_students/phscale.

ph Value of Common Household Items and the Environmental Effects ph on Water; http://www.epa.gov/acidrain/education/site_students/phscale. ACID RAIN What is acid rain? Acid rain is a broad term that is often used to describe several forms of acid deposition. Wet deposition is when rain, snow, fog, or mist contains high amounts of sulfuric

More information

Unit 3 Lesson 5: Acid Rain Ruin

Unit 3 Lesson 5: Acid Rain Ruin Focus Areas: Biodiversity; Science Focus Skills: Observation, experimentation, critical thinking Level of Involvement: AVERAGE Dedicated to Reducing Pesticides H I P P O = Pollution Objectives * To identify

More information

Red Cabbage ph paper

Red Cabbage ph paper Red Cabbage ph paper Summary Some of the most important kinds of chemicals in science are acids and bases. Although you may not realize it, you use acids and bases in your home everyday. You can recognize

More information

Acid Rain Experiments

Acid Rain Experiments Environmental Inquiry Cornell University, Ithaca, NY 14853 EnvInquiry@cornell.edu http://ei.cornell.edu Background Acid Rain Experiments Acid precipitation is defined to have a ph lower than 5.6. In New

More information

Effects of Acid Rain Abstract: This lesson will explore the concept of acid rain and its effects on ecosystems.

Effects of Acid Rain Abstract: This lesson will explore the concept of acid rain and its effects on ecosystems. Tayrn Cox Melissa Trujillo Ashley Page Spring 2002 Effects of Acid Rain Abstract: This lesson will explore the concept of acid rain and its effects on ecosystems. Grade Level: 3 rd grade Utah Core Curriculum

More information

15. Acid-Base Titration. Discover the concentration of an unknown acid solution using acid-base titration.

15. Acid-Base Titration. Discover the concentration of an unknown acid solution using acid-base titration. S HIFT INTO NEUTRAL 15. Acid-Base Titration Shift into Neutral Student Instruction Sheet Challenge Discover the concentration of an unknown acid solution using acid-base titration. Equipment and Materials

More information

4.3 Physical Variables

4.3 Physical Variables CHAPTER 4 PHYSICAL SCIENCE CONNECTIONS 4.3 Physical Variables You have read about the compounds that make up living things. The presence and amount of other compounds like oxygen and water are variables

More information

An Acid is. What is a base? Chemistry in Context: Chapter 6: Neutralizing The Threat of Acid Rain

An Acid is. What is a base? Chemistry in Context: Chapter 6: Neutralizing The Threat of Acid Rain Chemistry in Context: Chapter 6: Neutralizing The Threat of Acid Rain Assignment: All the problems with blue codes or answers on Page 529-530. What is an acid? Sour taste; found in vinegar, citrus fruits,

More information

The optimum ph range for most plants is between 5.5 and 7.0; however, many plants have adapted and thrive at values outside this range.

The optimum ph range for most plants is between 5.5 and 7.0; however, many plants have adapted and thrive at values outside this range. Scientist Guide Chemistry s Rainbow: The Potential of Hydrogen (ph) Introduction In chemistry, ph is a measure of the acidity or basicity of an aqueous solution. The concentration (or amount) of hydrogen

More information

Handout 6-A. The Ion Balancing Act of ph. Using Forensics: Wildlife Crime Scene!

Handout 6-A. The Ion Balancing Act of ph. Using Forensics: Wildlife Crime Scene! The Ion Balancing Act of ph Name Date We are affected every day by the ph of liquids in and around us. The food we eat and liquids we drink have ph levels, and our body organs require specific phs to keep

More information

Alkalinity. Evaluation copy

Alkalinity. Evaluation copy Alkalinity Computer 11 INTRODUCTION The alkalinity of water is a measure of how much acid it can neutralize. If any changes are made to the water that could raise or lower the ph value, alkalinity acts

More information

Experiment 16-Acids, Bases and ph

Experiment 16-Acids, Bases and ph Definitions acid-an ionic compound that releases or reacts with water to form hydrogen ion (H + ) in aqueous solution. They taste sour and turn litmus red. Acids react with certain metals such as zinc,

More information

Effect of Acid Rain on Plant Growth

Effect of Acid Rain on Plant Growth Effect of Acid Rain on Plant Growth Introduction This is a companion lab to the "Effect of Plant Nutrients in Soil and Soil ph on Plant Growth" lab. Acid rain is a term commonly used to refer to all types

More information

OCEAN LAYERS. QUESTION What happens when ocean water, brackish water, and river water contact one another?

OCEAN LAYERS. QUESTION What happens when ocean water, brackish water, and river water contact one another? OCEAN LAYERS QUESTION What happens when ocean water, brackish water, and river water contact one another? UNDERLYING CONCEPT The density difference between two volumes of water can prevent them from easily

More information

Properties of Acids and Bases

Properties of Acids and Bases Properties of Acids and Bases (Adapted from Flinn Scientific Acid Base Test Kit I #AP4567) Introduction Battery acid, stomach acid, acid rain just a few acids in our everyday life! What does it mean when

More information

Fact Sheet: How to Use Vinegar to Imitate Acid Rain

Fact Sheet: How to Use Vinegar to Imitate Acid Rain Fact Sheet: How to Use Vinegar to Imitate Acid Rain As you know from your reading, acid rain is not vinegar. But vinegar is an acid, and you can use it to create a solution that is like acid rain. You

More information

Experiments for Families

Experiments for Families ACIDS EATING MY NOSE! Acid rain is more acidic than normal rain and forms through a complex process of chemical reactions involving air pollution. The two most important pollutants that contribute to acid

More information

We use in our daily life a large

We use in our daily life a large 5 Acids, Bases and Salts We use in our daily life a large number of substances such as lemon, tamarind, common salt, sugar and vinegar. Do they have the same taste? Let us recall tastes of some edible

More information

VANDERBILT STUDENT VOLUNTEERS FOR SCIENCE. Acids and Bases. Fall 2012

VANDERBILT STUDENT VOLUNTEERS FOR SCIENCE. Acids and Bases. Fall 2012 VANDERBILT STUDENT VOLUNTEERS FOR SCIENCE Acids and Bases Fall 2012 GOAL: To introduce students to acids and bases. MATERIALS 3 10oz clear plastic cups 1 4 oz. bottle white vinegar - labeled Acid 1 4 oz.

More information

Acidity and Alkalinity of Drinking Water

Acidity and Alkalinity of Drinking Water Experiment 9 Acidity and Alkalinity of Drinking Water A. Acidity General Discussion While ph is a measure of a water sample's deviation from a neutral value of 7.00, it provides little information about

More information

CHM101 Lab Acids and Bases Grading Rubric

CHM101 Lab Acids and Bases Grading Rubric Name Team Name CHM101 Lab Acids and Bases Grading Rubric To participate in this lab you must have splash-proof goggles, proper shoes and attire. Criteria Points possible Points earned Lab Performance Printed

More information

The Bottled Ecosystem

The Bottled Ecosystem The Bottled Ecosystem Annotation Students investigate the interactions that take place among several variables of a closed ecosystem simulation. The activity described herein will cover the day of the

More information

Hardness Comparisons

Hardness Comparisons Hardness Comparisons Hardness Adapted from: An original Creek Connections activity. Creek Connections, Box 10, Allegheny College, Meadville, Pennsylvania 16335. Grade Level: all Duration: 50 minutes Setting:

More information

Lesson 4: Water ph Water Quality Sampling Time Frame: Two minute class periods Grade Level: 8 th 12 th Grade

Lesson 4: Water ph Water Quality Sampling Time Frame: Two minute class periods Grade Level: 8 th 12 th Grade Lesson 4: Water ph Water Quality Sampling Time Frame: Two 45-50 minute class periods Grade Level: 8 th 12 th Grade Overview: Water ph Water ph is an indication of the water s acidity measurements on a

More information

CHM 130LL: Vinegar Titration

CHM 130LL: Vinegar Titration CHM 130LL: Vinegar Titration In one type of acid-base neutralization reaction, an acid can react with a metal hydroxide base to produce water and a salt: HX (aq) + MOH (aq) H 2 O (l) + MX (aq) (1) acid

More information

Name Date. Cycling WebQuest

Name Date. Cycling WebQuest Name Date Cycling WebQuest Directions: Visit the following websites and answer the related questions. Your goal is to gain a better understanding of the carbon and nitrogen cycles. Background: In biogeochemical

More information

Experiment C-8 Acid Rain

Experiment C-8 Acid Rain 1 Experiment C-8 Acid Rain Objectives To study the acid rain phenomenon by producing carbon dioxide and dissolving it in water. Modules and Sensors PC + NeuLog application USB-200 module NUL-206 ph logger

More information

ANALYSIS OF PHOSPHORUS IN PLANT FOOD

ANALYSIS OF PHOSPHORUS IN PLANT FOOD Experiment 10 ANALYSIS OF PHOSPHORUS IN PLANT FOOD Adapted by Ross S. Nord, Eastern Michigan University, from Analysis of Phosphorous in Fertilizer found at http://chem.lapeer.org/chem2docs/phosphateanal.html

More information

Wherever chemical solutions are involved, ph matters. Some

Wherever chemical solutions are involved, ph matters. Some 47 Acids, Bases, and the ph Scale r e a d i n g Wherever chemical solutions are involved, ph matters. Some important chemical reactions, such as those involved in corrosion of iron or digestion of food,

More information

Water Treatment. Purpose. Background WATER TREATMENT LAB ACTIVITY EXPLORATIONS IN EARTH & ENVIRONMENTAL SCIENCES 99. Lab Activity.

Water Treatment. Purpose. Background WATER TREATMENT LAB ACTIVITY EXPLORATIONS IN EARTH & ENVIRONMENTAL SCIENCES 99. Lab Activity. Lab Activity WATER TREATMENT LAB ACTIVITY Water Treatment (Activity #7) Purpose Can you build a filter device that improves water quality? Background Water is a limited resource There are several steps

More information

Pollution Sources NEIGHBORHOOD WATER QUALITY

Pollution Sources NEIGHBORHOOD WATER QUALITY Lesson 2. Pollution and Water Quality Keywords: pollutants, water pollution, point source, non-point source, urban pollution, agricultural pollution, atmospheric pollution, smog, nutrient pollution, eutrophication,

More information

TEACHER NOTES SCIENCE NSPIRED

TEACHER NOTES SCIENCE NSPIRED Science Objectives Students will simulate adjusting the ph of a lake and draw conclusions about the relationship between ph and biodiversity. Students will learn the difference between biotic and abiotic

More information

Natural Resources. Air and Water Resources

Natural Resources. Air and Water Resources Natural Resources Key Concepts Why is it important to manage air and water resources wisely? How can individuals help manage air and water resources wisely? Air and Water Resources What do you think? Read

More information

Review and apply Investigation 5. Let s review Pages 311-312

Review and apply Investigation 5. Let s review Pages 311-312 Review and apply Investigation 5 Let s review Pages 311-312 1. After you tested all the known powders with all the test liquids, describe what you did to identify the unknown powder. Students should have

More information

Lecture 23. Acid rain.

Lecture 23. Acid rain. Lecture 23. Acid rain. Part2. Effects of acid rain. Objectives: 1. Alkalinity: The acid buffer. 2. Effects of acid rain. Readings: Turco: p. 278-284 ; Brimblecombe: p. 178-184 1. Alkalinity: The acid buffer.

More information

Syllabus OC18 Use litmus or a universal indicator to test a variety of solutions, and classify these as acidic, basic or neutral

Syllabus OC18 Use litmus or a universal indicator to test a variety of solutions, and classify these as acidic, basic or neutral Chemistry: 9. Acids and Bases Please remember to photocopy 4 pages onto one sheet by going A3 A4 and using back to back on the photocopier Syllabus OC18 Use litmus or a universal indicator to test a variety

More information

ENVIRONMENTAL MANAGEMENT: CLEAN WATER RESEARCH AS RELATED TO ACID MINE DRAINAGE

ENVIRONMENTAL MANAGEMENT: CLEAN WATER RESEARCH AS RELATED TO ACID MINE DRAINAGE ENVIRONMENTAL MANAGEMENT: CLEAN WATER RESEARCH AS RELATED TO ACID MINE DRAINAGE LESSON PLAN CREATED BY: Todd Mills (Grades 9 12) Lois Morris (Grades 6-8) Terry Rostcheck (Grades 6 8) Susan Tegi (Grades

More information

8.0 EXPERIMENT ON DETERMINATION OF ACIDITY OF WATER

8.0 EXPERIMENT ON DETERMINATION OF ACIDITY OF WATER 8.0 EXPERIMENT ON DETERMINATION OF ACIDITY OF WATER Sl. No. Contents Preamble 8.1 Aim 8.2 Introduction 8.2.1 Environmental Significance 8.3 Principle 8.4 Materials Required 8.4.1 Apparatus Required 8.4.2

More information

Determination of the Mass Percentage of Copper in a Penny. Introduction

Determination of the Mass Percentage of Copper in a Penny. Introduction Determination of the Mass Percentage of Copper in a Penny Introduction This experiment will cost you one penny ($0.01). The penny must be minted after 1983. Any penny will do; for best results the penny

More information

APS Science Curriculum Unit Planner

APS Science Curriculum Unit Planner APS Science Curriculum Unit Planner Grade Level/Subject Chemistry Stage 1: Desired Results Enduring Understanding Topic 6 Solutions: Solutions concentrations can be understood by looking at molar relationships.

More information

A molecule consists of two or more atoms of the same element, or different elements, that are chemically bonded together. The smallest part of a pure

A molecule consists of two or more atoms of the same element, or different elements, that are chemically bonded together. The smallest part of a pure Chemistry Notes A molecule consists of two or more atoms of the same element, or different elements, that are chemically bonded together. The smallest part of a pure substance (element or compound) Ex.

More information

25.1 Acids, Bases, and ph

25.1 Acids, Bases, and ph In the Investigations, you measured several indicators of water quality, including the ph. You may remember that ph values range from 0 to 14. Low values (0 to 6) indicate that a solution is acidic whereas

More information

5.0 EXPERIMENT ON DETERMINATION OF TOTAL HARDNESS

5.0 EXPERIMENT ON DETERMINATION OF TOTAL HARDNESS 5.0 EXPERIMENT ON DETERMINATION OF TOTAL HARDNESS Sl. No. Contents Preamble 5.1 Aim 5.2 Introduction 5.2.1 Environmental Significance 5.3 Principle 5.4 Materials Required 5.4.1 Apparatus Required 5.4.2

More information

Reaction in a Bag. Scientific Method Demonstrations

Reaction in a Bag. Scientific Method Demonstrations elearning 2009 Introduction Reaction in a Bag Scientific Method Demonstrations Publication No. 91419 Careful observation is the foundation of science, leading to questions about what we have observed how,

More information

Austin Peay State University Department of Chemistry CHEM 1111. Copper Cycle

Austin Peay State University Department of Chemistry CHEM 1111. Copper Cycle Cautions Nitric acid and sulfuric acid are toxic and oxidizers and may burn your skin. Nitrogen dioxide gas produced is hazardous if inhaled. Sodium hydroxide is toxic and corrosive and will cause burns

More information

Acids and Bases. AND a widemouth container of the following solids:

Acids and Bases. AND a widemouth container of the following solids: Acids and Bases GOAL To introduce students to acids and bases. MATERIALS: 3 10oz clear plastic cups 1 4 oz. bottle white vinegar - labeled Acid 1 4 oz. bottle of water - labeled Water 1 4 oz. bottle of

More information

3rd Grade Unit Pollution and Plant Growth

3rd Grade Unit Pollution and Plant Growth 3rd Grade Unit Pollution and Plant Growth Objective: This unit explains that pollution cannot always be seen and that polluted water can harm plants and affect plant growth. This unit was developed to

More information

Letter to the Student... 5 Test-Taking Checklist... 6 Next Generation Sunshine State Standards Correlation Chart... 7

Letter to the Student... 5 Test-Taking Checklist... 6 Next Generation Sunshine State Standards Correlation Chart... 7 Table of Contents Letter to the Student..................................... 5 Test-Taking Checklist.................................... 6 Next Generation Sunshine State Standards Correlation Chart...

More information

When water ionizes, a proton (hydrogen ion) is transferred from one water molecule to another, resulting in a hydrated hydrogen ion and a hydroxyl ion

When water ionizes, a proton (hydrogen ion) is transferred from one water molecule to another, resulting in a hydrated hydrogen ion and a hydroxyl ion Inorganic Carbon ph When water ionizes, a proton (hydrogen ion) is transferred from one water molecule to another, resulting in a hydrated hydrogen ion and a hydroxyl ion H 2 O + H 2 O H 3 O + + OH - Lowry-Bronsted

More information

Lab 25. Acid-Base Titration and Neutralization Reactions: What Is the Concentration of Acetic Acid in Each Sample of Vinegar?

Lab 25. Acid-Base Titration and Neutralization Reactions: What Is the Concentration of Acetic Acid in Each Sample of Vinegar? Lab 25. Acid-Base Titration and Neutralization Reactions: What Is the Concentration of Acetic Acid in Each Sample of Vinegar? Introduction Vinegar is basically a solution of acetic acid (CH3COOH). It is

More information

Chemical Reactions Conservation of Matter

Chemical Reactions Conservation of Matter Chemical Reactions Chemical Reactions Teacher Pages Purpose The purpose of this station is to reinforce students ability to compare and analyze the rearrangement of atoms in a chemical reaction. Students

More information

Leavener Lineup. Getting started. How do we use chemical reactions in the kitchen? Hands-on experiment. Year levels 4 5. Curriculum Links.

Leavener Lineup. Getting started. How do we use chemical reactions in the kitchen? Hands-on experiment. Year levels 4 5. Curriculum Links. rise and Shine: what Makes Bread Rise? Lesson 2 Leavener Lineup Year levels 4 5 Curriculum Links Science Science knowledge helps people to understand the effect of their actions (Yr 4, ACSHE062). Solids,

More information

SECOND GRADE 1 WEEK LESSON PLANS AND ACTIVITIES

SECOND GRADE 1 WEEK LESSON PLANS AND ACTIVITIES SECOND GRADE 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF SECOND GRADE WATER WEEK 1. PRE: Exploring the properties of water. LAB: Experimenting with different soap mixtures. POST: Analyzing

More information

Pure Water Take muddy water and make it clean

Pure Water Take muddy water and make it clean Take muddy water and make it clean Description: Visitors learn how raw water is treated to make clean, safe drinking water. They work in pairs to treat muddy water through flocculation, and watch a filtration

More information

Acids and Bases: Cabbage Juice ph Indicator

Acids and Bases: Cabbage Juice ph Indicator Acids and Bases: Cabbage Juice ph Indicator Teacher Version * If printing the labs in black & white, be sure to print out a color version of the cabbage juice ph scale separately * Acids and bases are

More information

AgriLife Extension Solutions

AgriLife Extension Solutions Understanding Water Quality Reports for Your Pond Todd Sink, Ph.D. Extension Fisheries Specialist Texas A&M AgriLife Extension Service Mikayla House Texas A&M AgriLife Extension Service Water quality tests

More information

Dissolved Oxygen: Comparing Oxygen Levels in Various Aquaria Samples

Dissolved Oxygen: Comparing Oxygen Levels in Various Aquaria Samples Name Period Date Dissolved Oxygen: Comparing Oxygen Levels in Various Aquaria Samples Objective The learner will compare the levels of dissolved oxygen in water at two different temperatures. The learner

More information

Spot the Fake. Scenario. Investigation

Spot the Fake. Scenario. Investigation Fifth Through Eighth Grade: Science Spot the Fake A sinister character is selling shards of pottery from an archaeological site. A historian who was asked to review the materials believes they are fake.

More information

Measuring ph in Water or CaCl2 Using a ph Meter. Compiled by Darren Murray, June 30, 2011 TABLE OF CONTENTS OVERVIEW 3

Measuring ph in Water or CaCl2 Using a ph Meter. Compiled by Darren Murray, June 30, 2011 TABLE OF CONTENTS OVERVIEW 3 Measuring ph in Water or CaCl2 Using a ph Meter Compiled by Darren Murray, June 30, 2011 TABLE OF CONTENTS OVERVIEW 3 PREPARING THE ph METER FOR USE (Calibration and Buffer Solutions) 4 When is Calibration

More information

Water Solutions Lesson: ph of Common Household Chemicals

Water Solutions Lesson: ph of Common Household Chemicals Water Solutions Lesson: ph of Common Household Chemicals Activity Title: ph of Common Household Chemicals Grade Level: 6-9 Subject: Lesson Length: Created by: Physical Science/Chemistry One 50-minute class

More information

Acids, Bases, and ph

Acids, Bases, and ph CHAPTER 9 1 SECTION Acids, Bases, and Salts Acids, Bases, and ph KEY IDEAS As you read this section, keep these questions in mind: What properties do acids have? What properties do bases have? How can

More information

ph Measurements of Common Substances

ph Measurements of Common Substances Chem 100 Section Experiment 10 Name Partner s Name Introduction ph Measurements of Common Substances The concentration of an acid or base is frequently expressed as ph. Historically, ph stands for the

More information

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. CHE 1400 - Spring 2015 - Chapter 7 Homework 7 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)According to Arrhenius, an acid and a base will react

More information

Materials OCEAN EXPLORATION

Materials OCEAN EXPLORATION OCEAN EXPLORATION Concepts Water chemists formulate a testable hypothesis and use appropriate techniques to collect data. One common water chemistry test measures ph (this will identify how acidic, neutral

More information

HOLT ENVIRONMENTAL SCIENCE HOW ECOSYSTEMS WORK

HOLT ENVIRONMENTAL SCIENCE HOW ECOSYSTEMS WORK HOLT ENVIRONMENTAL SCIENCE CHAPTER 05 HOW ECOSYSTEMS WORK I. Energy Flow in Ecosystems List two examples of ecological succession. Explain how a pioneer species contributes to ecological succession. Explain

More information

Water quality measurements tell the pond

Water quality measurements tell the pond Water Quality in Sportfish ponds Water Quality Water quality measurements tell the pond owner what is happening chemically in the pond. Any thing that affects water quality including pollution, wind, weather

More information

Chemistry Definitions Mr. C - JCS

Chemistry Definitions Mr. C - JCS A Acid rain: Rainwater with a ph of less than 5.7 is acid rain. It is caused by the gases NO2 (from car exhaust fumes) and SO2 (from the burning of fossil fuels) dissolving in rain. Acid rain kills fish,

More information

Ocean Ecosystems. Target Audience: Middle School. Next Generation Science Standards* 5- LS2; MS- LS2 Ecosystems: Interactions, Energy, and Dynamics

Ocean Ecosystems. Target Audience: Middle School. Next Generation Science Standards* 5- LS2; MS- LS2 Ecosystems: Interactions, Energy, and Dynamics Ocean Ecosystems Abstract What s in the ocean? Only 5% of the ocean has been explored and yet it is the largest ecosystem in the world. It affects the entire planet and this creates a great need to understand

More information

Earth Systems. Overview of Earth s Spheres. The Earth consists of four 'spheres' which pertain to the Earth's major reservoirs of matter and energy.

Earth Systems. Overview of Earth s Spheres. The Earth consists of four 'spheres' which pertain to the Earth's major reservoirs of matter and energy. Earth Systems Overview of Earth s Spheres The Earth consists of four 'spheres' which pertain to the Earth's major reservoirs of matter and energy. LITHOSPHERE: The solid, rocky shell of the Earth is the

More information

Rainbow in a Tube Use a ph indicator to create a chemical rainbow

Rainbow in a Tube Use a ph indicator to create a chemical rainbow Use a ph indicator to create a chemical rainbow Description: Visitors create rainbows in clear acrylic tubing, using universal indicator, a dilute solution of acid, and a dilute solution of base. Audience:

More information

Water Hardness. Evaluation copy

Water Hardness. Evaluation copy Water Hardness Experiment 11 When water passes through or over mineral deposits such as limestone, the levels of certain ions present in the water increase greatly and cause the water to be classified

More information

Colligative Properties - Freezing Point Depression

Colligative Properties - Freezing Point Depression Purpose To observe freezing point depression of different solutions and calculate the molar mass of commercial antifreeze. Introduction In winter, trucks dispense dirt and salt onto the roads and antifreeze

More information

Focus Questions: How can using the scientific method help me to understand the effects of ocean acidification on seashells?

Focus Questions: How can using the scientific method help me to understand the effects of ocean acidification on seashells? Exploring the Scientific Method using Seashells Examining the Effects of ph Concept: The relationship between carrying ph of solutions and its impact on dissolving shells is explored. GPS: S3CS3c, S3CS5b,

More information

Protecting Our Water Resources: Student Activities for the Classroom. Water Resource Educational Activities for Kindergarten through Ninth Grade

Protecting Our Water Resources: Student Activities for the Classroom. Water Resource Educational Activities for Kindergarten through Ninth Grade Title: Decaying Substances and Water Pollution Time: 5 class periods Objectives: Observe oxygen consumption caused by natural pollutants. Understand the use of a control when conducting experiments. Introduction:

More information

I. Definitions: Name: Period: Date: 1. Arrhenius (1887)- produce in aqueous solutions produce in aqueous solutions

I. Definitions: Name: Period: Date: 1. Arrhenius (1887)- produce in aqueous solutions produce in aqueous solutions Name: Period: Date: I. Definitions: 1. Arrhenius (1887)- produce in aqueous solutions produce in aqueous solutions 2. Bronsted-Lowry (1923) 3. Lewis (1923), so only allows for aqueous solutions only protic

More information

Elements of Chemistry Acids and Bases Teacher s Guide

Elements of Chemistry Acids and Bases Teacher s Guide Teacher s Guide oneone oee Grade Level: 9 12 Curriculum Focus: Physical Science Lesson Duration: Two class periods Program Description Explore the chemistry of acids and bases to see how fundamental they

More information

Experiment 18: ph Measurements of Common Substances. Experiment 17: Reactions of Acids with Common Substances

Experiment 18: ph Measurements of Common Substances. Experiment 17: Reactions of Acids with Common Substances Experiment 18: ph Measurements of Common Substances and Experiment 17: Reactions of Acids with Common Substances What is this lab about? You mean what ARE THESE labs about? Ok, so what are THESE labs about?

More information

Rev 2016-09-23. Experiment 3

Rev 2016-09-23. Experiment 3 Experiment 3 PREPARATION OF A STANDARD SODIUM HYDROXIDE SOLUTION, DETERMINATION OF PURITY OF IMPURE KHP AND STANDARDIZATION OF HYDROCHLORIC ACID 2 lab periods Reading: Chapter 1 (pg 22-24), Chapter 8,

More information

What is the Percent Copper in a Compound?

What is the Percent Copper in a Compound? Lab 9 Name What is the Percent Copper in a Compound? Pre-Lab Assignment Complete this pre-lab on this sheet. This written pre-lab is worth 15% (3 points) of your lab report grade and must be initialed

More information

Water Treatment Filtration Lab. discharged into an aquatic ecosystem? We had to build a water filtration system with

Water Treatment Filtration Lab. discharged into an aquatic ecosystem? We had to build a water filtration system with Water Treatment Filtration Lab Brandon Lyons P.5 APES Abstract: How could polluted water be remediated so that it could support life when it is discharged into an aquatic ecosystem? We had to build a water

More information

Author: Lucy Daniels and Albert Kaskel- Adaptations made to the lab for the seventh grade science curriculum

Author: Lucy Daniels and Albert Kaskel- Adaptations made to the lab for the seventh grade science curriculum Cindy Eskina Students at Piper Middle School practice scientific inquiry by incorporating steps from the scientific methods into various activities and experiments. Seventh graders will participate and

More information