Wherever chemical solutions are involved, ph matters. Some
|
|
- Osborne Lawrence
- 8 years ago
- Views:
Transcription
1 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, will only take place within a specific ph range. In agriculture, the soil s ph affects crop yields of fruits, vegetables, and grains, such as wheat, barley, and corn. The control of ph is also important within your body. For example, the ph of your blood is maintained at a slightly basic level of approximately 7.4. In your stomach an acidic ph between 2 and 4 helps you digest your food. The ph of water in the environment is also important because it affects the survival of fish and other organisms. Scientists measure ph when they study acid rain and when they work to maintain drinking water quality. CHALLENGE What is ph, and how does it affect the quality of water? Populations of brook trout have been drastically reduced by the effects of acid rain on freshwater lakes and streams in the northeastern United States. C-84
2 Acids, Bases, and the ph Scale Activity 47 Materials For each student 1 Student Sheet 47.1, Directed Reading Table: Comparing Acidic, Basic, and Neutral Liquids concept map from Activity 38, Dissolving Duel Reading Use Student Sheet 47.1, Directed Reading Table: Comparing Acidic, Basic, and Neutral Liquids, to guide you through the following reading. The ph scale As you observed in the last activity, the ph of a solution is a number that expresses how acidic or basic it is. The ph scale ranges from 0 for very acidic to 14 for very basic. At the middle of the scale, 7, is a neutral liquid, such as distilled water. The scale is not linear with equal increments like a ruler or a thermometer. The ph scale is a lot like the Richter scale used to measure the strength of earthquakes. An 8.0 earthquake is 10 times stronger than a 7.0 earthquake, and a ph of 3 is 10 times more acidic than a ph of 4. For every increase or decrease in ph of 1.0 unit, the acidity or basicity of the solution changes tenfold. Battery acid Lemon juice Vinegar Orange juice Boric acid Corn Milk Distilled water Blood Sea water Baking soda Milk of magnesia Borax Ammonia Bleach Household lye Very acidic Common range for most natural waters Very basic 2561 LabAids SEPUP IAPS SB Figure: PhysSB C LegacySansMedium 10/11.5 ph Scale C-85
3 Activity 47 Acids, Bases, and the ph Scale The color change of a ph indicator results from a chemical reaction between the indicator and the acid or base dissolved in water. An acidic solution con - tains acid and turns ph paper deep orange or red. A basic solution contains a base, and turns ph paper blue or violet. Acids are recognizable by their sour taste and because they can dissolve some metals. Bases from soap to bleach to drain cleaner have other properties. They tend not to react with metals and are bitter in taste. They are slippery to the touch because they react with your skin oils to form a substance a lot like soap. However, both acids and bases can be corrosive to human skin, if the ph is below 2 or above 12. Acids, Bases, ph, and Industry Controlling ph is important in the production of foods, paper products, and chemicals. The low ph of vinegar preserves foods, such as pickles, because it slows the growth of bacteria and other microbes. Because they are chemically reactive, acids and bases are also important in the manufacture of many products. For example, sulfuric acid is by far the largest single product of the chemical industry and is used to make fertilizer, refine petroleum, and clean and process metals. Nitric acid is used to make explosives and dyes. The bases sodium hydroxide and potassium hydroxide are used to make soaps. Sodium hydroxide is also the main ingredient in drain cleaners. Ammonia, a base that contains nitrogen, is used both as a fertilizer and to produce other fertilizers. Orange juice and vinegar are two familiar liquids that contain acids. C-86
4 Acids, Bases, and the ph Scale Activity 47 Drain cleaner and household ammonia are two familiar liquids that contain bases. ph and the Environment If the ph of water in rivers, streams, and lakes becomes too high or too low, many animals and plants cannot survive. Wastes released by human activity may disturb the acid base balance in bodies of water. Even a small change from the normal range can harm some aquatic life and cause changes in ecosystems that are hard to predict. Most organisms that live in freshwater are healthiest at ph values from 6 to 9. Variations in ph outside of this range reduce populations of organisms by decreasing survival of adults and reducing reproductive rates. ph and Drinking Water The federal government s standards for drinking water require a ph between 6.5 and 8.5. Acidic or basic tap water may react chemically with water pipes and release contaminants into the drinking water. The biggest hazard is that acid may dissolve lead out of the metal of some pipes into the water flowing through them. Lead can have serious health effects that vary with dosage and among different individuals. Young children are much more sensitive than adults, but adults can also be affected. Lead acts on the brain, nervous system, and other organs, causing effects from behavioral and learning problems to seizures and even death. C-87
5 Activity 47 Acids, Bases, and the ph Scale Analysis 1. In what ways can the ph or acidity of water affect: a. living things, such as fish? b. people? 2. Fill in the blanks of the following sentences with the correct number. a. A solution with a ph of 5 is times as acidic as a solution with a ph of 6. b. A solution with a ph of 4 is times as acidic as a solution with a ph of Add the following words to your concept map from Activity 38, Dissolving Duel. acid base neutral ph 4. Compare and contrast acids and bases by completing a Venn diagram. In your science notebook, make a larger version of the Venn diagram shown below. Compare acids and bases by recording common features in the space where the circles overlap. Contrast acids and bases by recording unique features of each kind of substance on the far side of each circle. Acids Bases What LabAids do you SEPUP predict IAPS will SB happen to ph when an acid and a base are Figure: PhysSB C LegacySansMedium mixed together? Explain 10/11.5 your prediction. C-88
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 informationAcid 7 Base. 1. Describe two things hydrochloric acid does in your body system. 2. What does sodium hydrogencarbonate do in your body system?
Acids and Bases acid: a compound that, when dissolved in water, forms a solution with a ph less than 7 base: a compound that, when dissolved in water, forms a solution with a ph greater than 7 ph: the
More informationLetter 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 informationVANDERBILT 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 information6.8 Measuring the Acidity of Solutions Page 160
6.8 Measuring the Acidity of Solutions Page 160 PRESCRIBED LEARNING OUTCOMES measure substances and solutions according to ph, solubility, and concentration KNOWLEDGE ph is the measure of the tendency
More information5 ACIDS, BASES AND SALTS
5 ACIDS, BASES AND SALTS TEXTBOOK QUESTIONS AND ANSWERS Q.1. Taste the following substances and enter the result in the following table : Substance Taste (Sour / bitter / any other) Lemon juice Orange
More informationAcids 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 informationLesson 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 informationProperties 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 informationACIDS AND BASES SAFETY PRECAUTIONS
ACIDS AND BASES Mild acids and bases are used in cooking (their reaction makes biscuits and bread rise). Acids such as those in our stomachs eat away at food or digest it. Strong acids and bases are used
More informationph 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 informationYou may have heard the word acid used in your everyday life. List some things that this word was describing when you heard it.
Textbook pages 158 to 175 What are acids and bases, and how do they react? Before You Read Topic 2.4 Summary You may have heard the word acid used in your everyday life. List some things that this word
More informationThe 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 informationSyllabus 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 informationChapter 6. Solution, Acids and Bases
Chapter 6 Solution, Acids and Bases Mixtures Two or more substances Heterogeneous- different from place to place Types of heterogeneous mixtures Suspensions- Large particles that eventually settle out
More informationUrban 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 informationChemistry Unit Test Review
SNC 2DI Chemistry Unit Test Review Note: this review sheet only covers the second half of our chemistry unit. You should use our mid-unit test review sheet to recall concepts from the first half of the
More informationAcids and Bases: Cabbage Juice ph Indicator
Acids and Bases: Cabbage Juice ph Indicator Student Advanced Version Acids and bases are found in a variety of everyday items, including food and drink, medicine, and cleaning products. In this lab, we
More informationChemists use the ph value to measure how acidic or basic a solution is. The ph scale runs from 0 to 14:
The ph Value Chemists use the ph value to measure how acidic or basic a solution is. The ph scale runs from 0 to 14: If the ph value is lower than 7 (0 to 6.99) the solution contains more H + ions than
More informationEXPERIMENT 20: Determination of ph of Common Substances
Materials: ph paper and color chart (ph range 3 to 12) or ph meter distilled water white vinegar household ammonia (or baking soda) spot plate test or 3 small test tubes stirring rod solutions / fruits
More informationWe 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 informationQ1: What is the ph Scale? Q6: As acids become more acidic, their ph values
Q1: What is the ph Scale? Q6: As acids become more acidic, their ph values increase or decrease? Q2: The range of values of the ph scale is: Q7: As bases become more alkaline, their ph values increase
More informationEXPERIMENT 4 Acid Strength
EXPERIMENT 4 Acid Strength Introduction Many common substances are either acids or bases. Some acids, like stomach acid are necessary for our health, while others, like sulfuric acid are dangerous and
More informationAcids & Bases Around the House Use a ph indicator to find acids and bases
Use a ph indicator to find acids and bases Description: Visitors predict whether various household solutions are acids or bases, and test their hypotheses using a universal ph indicator. Then, visitors
More informationNeutralizing 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 informationNatural 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 informationHow To Test Soil
Chris Zdorovtsov Horticulture Extension Educator, South Dakota Cooperative Extension Service Karelyn Farrand South Dakota 4-H CHARACTER COUNTS! State Coordinator April 2011 Soil Testing 3 rd -5 th grade
More informationLOGARITHMS AND THE ph SCALE
NAME: DATE: LOGARITHMS AND THE ph SCALE A scientific application of Logarithms is the ph scale which is used to measure the concentration of H + ions in an acidic or basic solution. ph is equal to the
More informationDescribing Acids and Bases
Section 3 Describing Acids and Bases 3 Describing Acids and Bases Objectives After this lesson, students will be able to L.3.3.1 Name the properties of acids and bases. L.3.3.2 Identify where acids and
More informationph 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 informationANSWER KEY. Acids, Bases, and Solutions. Chapter Project Worksheet 1 1. Answers will vary. Sample: cherries, blueberries,
Chapter Project Worksheet 1 1. Answers will vary. Sample: cherries, blueberries, and grass 2. Answers will vary. Sample: Cut 5 g of cherries into small pieces and place in blender. Blend for two minutes,
More informationACIDS, BASES AND SALTS
Acids are those chemical substances which have a sour taste. Bases are those chemical substances which have a bitter taste. A salt is an ionic compound which dissociates to yield a positive ion other than
More informationExperiment 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 informationChem 100 Lab Experiment #9 - ACID/BASE INDICATORS
Lab #9 Chem 100 Lab Experiment #9 - ACID/BASE INDICATORS Name: Purpose: In this laboratory we will investigate how indicators can be used to test for the presence of acids or bases in a number of common
More informationOf Cabbages and Kings
Of Cabbages and Kings Learning Objectives: Students will learn about indicators, acids, bases, and the ph scale. GRADE LEVEL K 8 SCIENCE TOPICS Physical Properties Techniques Chemical Reactions PROCESS
More informationMULTIPLE 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 informationAcid-Base Indicator Useful Indicators
Chemistry 101 - H Acids and Bases This presentation was created by Professor Carl H. Snyder Chemistry Department University of Miami Coral Gables, FL 33124 CSnyder@miami.edu Chapter 10 - Acids and Bases
More informationEXPERIMENT 10 Chemistry 110. Solutions Part 2 ACIDS, BASES, AND ELECTROLYTES
EXPERIMENT 10 Chemistry 110 Solutions Part 2 ACIDS, BASES, AND ELECTROLYTES PURPOSE: The purpose of this experiment is to determine the properties of solutions of acids, bases and electrolytes. Students
More informationChemistry 101. Chemistry Experiments for the Home Acidity Determination Using Indicators
Chemistry 101 Chemistry Experiments for the Home Acidity Determination Using Indicators I. Objective: To determine the acidity of a variety of common substances by the use of indicators. To prepare your
More informationph 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 informationIII. BACKGROUND KNOWLEDGE
Chemical Bonds and Reactions (Water) Grade Level: 7 (Applied Technology) Presented by: James Rubright, Three Oaks Middle School, Fort Myers, Florida Length of Unit: Ten Daily Lessons and Activities I.
More informationChapter 17. How are acids different from bases? Acid Physical properties. Base. Explaining the difference in properties of acids and bases
Chapter 17 Acids and Bases How are acids different from bases? Acid Physical properties Base Physical properties Tastes sour Tastes bitter Feels slippery or slimy Chemical properties Chemical properties
More informationAcids, Bases, and Indicators Colorful Chemistry
Cool Chemistry Show Activity 7 Acids, Bases, and Indicators Colorful Chemistry GOALS In this activity you will: Identify common household acids and bases. Identify characteristic properties of acids and
More informationThis 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 information1. What do you think is the definition of an acid? Of a base?
Concepts of ph Why? The level of acidity or basicity affects many important biological and environmental processes: enzymes function effectively only in narrowly defined ranges of ph; blood ph in part
More informationProperties 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 informationQuestions for Discussion. Introduction. What is ph? Neutralization
Questions for Discussion Why do leaves change color in autumn? What are acids and bases? How does red cabbage fit in? How are all these things related? Introduction The questions above may not seem related,
More informationCHM 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 informationDukes of Hazard Activity Time:
Dukes of Hazard Activity Time: TEACHERS: Read Populution and Water Source Protection on page 80 of Peel Water Story book. Objectives: Students will: Identify household hazardous waste (HHW) materials around
More informationAcids, Bases and Salts
Acids, Bases and Salts 2 HAPTER Tips and Tricks Acids are sour in taste and bases are bitter in taste. Indicators are chemical substances which give different colours in acidic and basic solutions. If
More informationHow To Understand And Understand The Effects Of Pollution And 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 informationHousehold Acids and Bases
Household Acids and Bases GRADE LEVEL INDICATORS Experiment Demonstrate that the ph scale (0-14) is used to measure acidity and classify substances or solutions as acidic, basic, or neutral. 21 Develop
More informationChemistry 52. Reacts with active metals to produce hydrogen gas. Have a slippery, soapy feeling. React with carbonates to produce CO 2
ACID AND BASE STRENGTH Experiment #2 PURPOSE: 1. To distinguish between acids, bases and neutral substances, by observing their effect on some common indicators. 2. To distinguish between strong and weak
More informationA 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 informationHomework 1. Q1a). Describe how you could test the ph of a solution and obtain its ph value.
Homework 1 Q1a). Describe how you could test the ph of a solution and obtain its ph value. b) What colours do acids turn universal indicator? c) What range of ph values can be shown by acids? d) What colours
More informationExperiment 9: Acids and Bases Adapted from: Chemistry, Experimental Foundations, 4th Ed. Laboratory Manual, by Merrill, Parry & Bassow.
Chem 121 Lab Clark College Experiment 9: Acids and Bases Adapted from: Chemistry, Experimental Foundations, 4th Ed. Laboratory Manual, by Merrill, Parry & Bassow. Content Goals: Increase understanding
More informationChapter 2. The Chemistry of Life Worksheets
Chapter 2 The Chemistry of Life Worksheets (Opening image courtesy of David Iberri, http://en.wikipedia.org/wiki/file:camkii.png, and under the Creative Commons license CC-BY-SA 3.0.) Lesson 2.1: Matter
More informationUsing composting beds to treat acidity in saline drain water
Government of Western Australia Department of Water Using composting beds to treat acidity in saline drain water Introduction Acidic saline water is common in drains used to manage shallow saline watertables
More informationHousehold Acids and Bases
Household Acids and Bases Computer 28 Many common household solutions contain acids and bases. Acid-base indicators, such as litmus and red cabbage juice, turn different colors in acidic and basic solutions.
More informationReturn to Lab Menu. Acids and Bases in Your House
Return to Lab Menu Acids and Bases in Your House OBJECTIVES Isolate a natural acid-base indicator. Determine the acid-base properties of common household solutions. INTRODUCTION Acids and bases are among
More informationDissolving of sodium hydroxide generates heat. Take care in handling the dilution container.
TITRATION: STANDARDIZATION OF A BASE AND ANALYSIS OF STOMACH ANTACID TABLETS 2009, 1996, 1973 by David A. Katz. All rights reserved. Reproduction permitted for education use provided original copyright
More informationAcidity in the Soil. Unit. Year levels 5 6. About this activity. Demonstrating ph levels in substances. Curriculum Links. Science
Unit Year levels 5 6 Acidity in the Soil growth and survival of living things are The affected by the physical conditions of their environment (ACSSU094). Scientific knowledge is used to inform personal
More informationElements 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 informationCHAPTER 16: ACIDS AND BASES
CHAPTER 16: ACIDS AND BASES Active Learning: 4, 6, 14; End-of-Chapter Problems: 2-25, 27-58, 66-68, 70, 75-77, 83, 90-91, 93-104 Chapter 15 End-of-Chapter Problems: 69-74, 125, 129, 133 16.1 ACIDS AND
More informationREFERENCE DATA SHEET FOR CHEMICAL AND ENZYMATIC DRAIN CLEANERS By: William D. Sheridan, CIH, CHMM
November 1994 REFERENCE DATA SHEET FOR CHEMICAL AND ENZYMATIC DRAIN CLEANERS By: William D. Sheridan, CIH, CHMM Chemical burns Dispensing methods Chemical reactions producing heat, gas eruptions, and/or
More informationENVIRONMENTAL 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 informationThe National Board of Boiler and Pressure Vessel Inspectors 1055 Crupper Avenue Columbus, Ohio 43229 614.888.8320
TheNationalBoardofBoilerandPressureVesselInspectors 1055CrupperAvenue Columbus,Ohio43229 614.888.8320 NB-410, Revision 3 Sept, 2015 1 1.0 GENERAL The purpose of this document is to provide basic guidelines
More informationIntroduction. ph = log [H + ]
Visualizing ph 2010, 1992 by David A. Katz. All rights reserved. Permission granted for classroom use. All reproductions must include original copyright. David A. Katz Chemist, Educator, Science Communicator,
More informationOverview Students explore ph with an emphasis on soil ph. This activity uses soils and vinegar solutions.
Activity: Acid to A1ka1ine Grades 4-8 Overview Students explore ph with an emphasis on soil ph. This activity uses soils and vinegar solutions. Background One of the significant factors in growing successful
More informationph Measurement and Control
ph Measurement and Control Tech Tip #14 1997 I. The Need for ph II. ph System Requirements III. ph Electrode Conditioning Procedures IV. How the electrode works V. Identifying the Electrode Components
More informationReview 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 informationBiT Stream Study - Guided Observations:
BiT Stream Study - Guided Observations: Streams are the pathways that transport water through a watershed. They are also critical to the healthy functioning of the watershed and the myriad of habitats
More informationInorganic mercury/ elemental mercury General information
Inorganic mercury/ elemental mercury General information Key Points Fire Does not easily burn under normal conditions Reacts with nitric acid and hot concentrated sulphuric acid. May react explosively
More informationWORKSHEET: ph and Water 23 Lab Instructor: Lab Day & Time: Student name(s): drain cleaner flat soda pop window cleaner ammonia.
WORKSHEET: ph and Water 23 Lab Instructor: Lab Day & Time: Student name(s): DATA AND ANALYSIS ph Substance ph Value Substance ph Value Substance ph Value pure water apple juice dish soap sugar water beer
More informationNomenclature and Household Items
Nomenclature and Household Items NAME: DATE: PERIOD: Background: Many household items contain chemicals that are commonly used in everyday life. Some chemicals are edible while other compounds would be
More informationUnit A: Studying Materials Scientifically
ITEM BANKS Unit A: Studying Materials Scientifically Multiple choice: Circle the best answer. 1. What safety rules should you always follow while doing a science laboratory? a. Wear safety goggles at all
More informationTotal Suspended Solids Total Dissolved Solids Hardness
Total Suspended Solids (TSS) are solids in water that can be trapped by a filter. TSS can include a wide variety of material, such as silt, decaying plant and animal matter, industrial wastes, and sewage.
More information3. Which relationship can correctly be inferred from the data presented in the graphs below?
1. Recent evidence indicates that lakes in large areas of New York State are being affected by acid rain. The major effect of acid rain in the lakes is (1) an increase in game fish population levels (3)
More informationJuice Titration. Background. Acid/Base Titration
Juice Titration Background Acids in Juice Juice contains both citric and ascorbic acids. Citric acid is used as a natural preservative and provides a sour taste. Ascorbic acid is a water-soluble vitamin
More information1. PUBLIC HEALTH STATEMENT
1 This Statement was prepared to give you information about fuel oils and to emphasize the human health effects that may result from exposure to them. The Environmental Protection Agency (EPA) has identified
More informationChemistry IPA. To complete this Interest Project Patch, Cadette, Senior, and Ambassador Girl Scouts must complete:
Chemistry IPA Girl Scouts of Wisconsin Badgerland Council For Girl Scout Cadettes, Seniors and Ambassadors Created by Women in Chemistry At Michigan State University To complete this Interest Project Patch,
More informationExtracting Energy from Biomass
Key Terms cellular respiration fermentation greenhouse gases 1.3 Extracting Energy from Biomass greenhouse effect acid precipitation cellular respiration a process that releases energy from organic molecules,
More informationOxivir Tb and Accelerated Hydrogen Peroxide (AHP) Frequently Asked Questions
Oxivir Tb and Accelerated Hydrogen Peroxide (AHP) Frequently Asked Questions What is Accelerated Hydrogen Peroxide (AHP)? AHP is a patented synergistic blend of commonly used, safe ingredients that when
More informationMechanical Systems Competency 1.20
Competency 1.20 Mechanical systems personnel shall demonstrate a working level knowledge of the safety and health fundamentals of mechanical systems and/or components. 1. Supporting Knowledge and Skills
More informationWater 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 informationLesson 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 informationPART I: PREPARATION OF SOLUTIONS AND STANDARDIZATION OF A BASE
TITRATION: STANDARDIZATION OF A BASE AND ANALYSIS OF STOMACH ANTACID TABLETS 2009, 1996, 1973 by David A. Katz. All rights reserved. Reproduction permitted for education use provided original copyright
More informationTopic 8 Acids and bases 6 hours
Topic 8 Acids and bases 6 hours Hydronium ion (H3O + ) = more stable form of hydrogen ion (H + ) H + + H2O H3O + 8.1 Theories of acids and bases 2 hours 1. Arrhenius H-X / M-OH ACID a substance that dissociates
More informationChapter 6: Mixtures. Overall Objectives 46. 6.1 Introduction 46. Time Required: 6.2 Types of mixtures 46
Chapter 6: Mixtures Overall Objectives 46 6.1 Introduction 46 6.2 Types of mixtures 46 6.3 Like dissolved like 46 6.4 Soap 47 6.5 Summary 47 Experiment 6: Mix it Up! 48 Review 52 Notes 52 Time Required:
More informationIron and manganese are two similar elements
L-5451 2-04 Drinking Water Problems: Iron and Manganese Mark L. McFarland, Associate Professor and Extension Soil Fertility Specialist Monty C. Dozier, Assistant Professor and Extension Water Resources
More informationSpecimen Paper. Time allowed! 60 minutes
Centre Number Surname Candidate Number Specimen Paper For Examiner s Use Other Names Candidate Signature Examiner s Initials General Certificate of Secondary Education Foundation Tier Question 1 Mark Chemistry
More informationCHEMICAL DETERMINATION OF EVERYDAY HOUSEHOLD CHEMICALS
CHEMICAL DETERMINATION OF EVERYDAY HOUSEHOLD CHEMICALS Purpose: It is important for chemists to be able to determine the composition of unknown chemicals. This can often be done by way of chemical tests.
More informationLesson Plan 16 Cool Chemistry - DIY ph Indicator
Lesson Plan 16 Cool Chemistry - DIY ph Indicator Brief description Red cabbage juice is a natural ph indicator making this classic activity one of the most popular chemistry experiments for children. The
More informationConsultation Tools. The Educational Tool Kit. Porosity: The hair s ability to absorb moisture and liquids.
Consultation Tools The Educational Tool Kit. Porosity: The hair s ability to absorb moisture and liquids. To explain porosity in the hair you need the following items: Wax paper, Construction paper, Paper
More information6.2 ph AND poh CALCULATIONS
6.2 ph AND poh CALCULATIONS Practice (Page 239) 1. (a) 10 7 mol/l (b) 10 11 mol/l (c) 10 2 mol/l (d) 10 4 mol/l (e) 10 14 mol/l 2. (a) 3 (b) 5 (c) 7 (d) 10 3. When a solution increases by two ph units
More informationChapter 3: Separating Mixtures (pg. 54 81)
Chapter 3: Separating Mixtures (pg. 54 81) 3.2: Separating Mechanical Mixtures (PB Pg. 40 5 & TB Pg. 58 61): Name: Date: Check Your Understanding & Learning (PB pg. 40 & TB pg. 61): 1. What are four methods
More informationPhosphates (ortho- and total)
INTRODUCTION Phosphates (ortho- and total) Phosphorus is an essential nutrient for all aquatic plants and algae. Only a very small amount is needed, however, so an excess of phosphorus can easily occur.
More informationScience of Life Explorations
Science of Life Explorations Student Scientists: Make Your Bed Activity #2 Study Soil While we are still talking about soil, let s check three other soil properties that will affect your garden: compaction
More informationCLEANING WATER. Student Section
National Aeronautics and Space Administration CLEANING WATER Student Section Student Name This lesson challenges you to create and test a water filtration system. During this lesson, you will design and
More informationSIHHHDS303A. Hair colour. Skilling people for the industry
SIHHHDS303A Hair colour Skilling people for the industry SIHHHDS303A Hair colour Skilling people for the industry Hair colour all theory and preparation for real skills transfer from mannequin activities
More information