# Mixing Warm and Cold Water

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Mixing Warm and Cold Water A Continuing Investigation of Thermal Pollution By Kevin White 1

2 Context: This lesson is intended for students conducting an ongoing study of thermal pollution. Perhaps, students are inquiring about the environmental impact of heated water being dumped into a local river or lake by power plants. This lesson would likely follow three or four previous lessons that provide a basic understanding of how coal and nuclear plants use water to cool and, indirectly, produce energy. This lesson is intended to provide an opportunity for teachers to engage in explicit instruction of the nature of science and scientific inquiry. This lesson is based on an existing lesson developed by Vernier and Texas Instruments for use with their products. Possible Objectives for a teacher to pursue in this lesson: Scientific Inquiry Fundamental Abilities Necessary to do Scientific Inquiry: Use technology and mathematics to improve investigations and communications. Fundamental Understandings About Scientific Inquiry: Scientists rely on technology to enhance the gathering and manipulation of data. Nature of Science Fundamental Understandings the Nature of Science:: Subjective aspect of the nature of science: scientists often come to different conclusions even though they are using the same data. Subject Matter Content Heat moves in predictable ways, flowing from warmer objects to cooler ones, until both reach the same temperature. 2

3 Mixing Warm and Cold Water Mixing Warm and Cold Water OBJECTIVES In this investigation, you will: A Continuing Investigation of Thermal Pollution construct and use a simple calorimeter use a TI Graphing Calculator, a LabPro interface, and two Temperature Probes to measure temperature mix cold and warm water MATERIALS LabPro interface 2, styrofoam cups TI Graphing Calculator 2, 250-mL beaker DataMate program cold water 2, Temperature Probes warm water Graduated cylinder Figure 1 3

4 Investigations Start With A... Temperature of the cool water: C Temperature of the warm water: C 1. Make a prediction! What will happen to the temperature of the warm and cool water when the two are mixed together? Ten seconds before you mix? Ten seconds after you mix? Two minutes after you mix? Write your prediction below: (Shhh!! Don t share this yet!) Why do you believe this? In other words, what s your explanation for your hypothesis? Is your question testable? How will you know if your hypothesis was correct? Draw and label a graph that best represents the temperature of both the hot and cold water before and after mixing (i.e., temperature versus time). Hint: Each probe will have its own line in the graph. 4

6 7. Use a 100-mL graduated cylinder to get ml (100.0 g) of warm water from the container supplied by your teacher. Place Probe 2 into the warm water in the graduated cylinder. 8. Measure temperatures. 1. After the probes have been in the liquids for exactly 30 seconds, select START to begin collecting temperature data. 3. Let the lab pro collect data for exactly 60 seconds and then transfer the warm water and its probe to the to cup containing the cool water and its probe. 4. Use the warm water s probe to gently stir warm/cool water mixture. Continue stirring until the remaining 120-seconds of data collection is finished. 9. On the displayed graph of temperature vs. time, each point for Probe 1 is plotted with a dot, and each point for Probe 2 with a box. As you move the cursor right or left, the time (X) and temperature (Y) values of each data point are displayed below the graph. Record the temperature of this bath just prior to mixing on the next page (round to the nearest 0.1 C). Press to switch the cursor to the curve of temperature vs. time for Probe 2 (warm water). Examine the data points along the curve. Record the temperature of this bath just prior to mixing in the data section below (round to the nearest 0.1 C). Press the right arrow key on the calculator until you get to point at which you have the temperature for the mixed bath. Record this in the data section below. (round to the nearest 0.1 C). DATA Cold Water Warm Water Probe 1 Probe 2 Temperature of each bath just prior to mixing C C (Hint: you will need to interpret your graph here) The temperature of the mixed bath C PROCESSING THE DATA 1. Is the final temperature of the mixed bath the exact midpoint between the initial cold and warm water baths? 2. Does the graph created in your calculator match your prediction? Why or why not? 6

7 Mixing Warm and Cold Water 3. How did using the Vernier Probeware today improve your investigation? Hint: Compare the use of probeware to Alcohol thermometers. How would you need to change your procedure? Do you have any other sources of error when you use the thermometer? 4. What are some reasons you can think of as to why scientists rely on new technology to gather and manipulate their data? 7

8 A Sneak Peak for Tomorrow s Lesson: As we continue to investigate thermal pollution we need to have a better understanding of the movement of thermal energy. Heat can be defined as energy transferred between particles of matter because of differences in temperature. The ability of matter to transfer heat depends on its mass, temperature and specific heat capacity. The joule (J) is the SI unit we use to communicate the quantity or amount of energy. If you recall, the experts we read about in the Seattle Times article used a variety of numbers and figures to support their arguments. So far, we understand the basic idea of heat transfer in a qualitative way. Now we need to acquire some quantitative tools to make sense of these numbers from the article. Our lab tomorrow will get us started on that. We ll be using one equation that uses three ideas you re probably already familiar with (i.e., heat, temperature, and mass). We re going to build on these three ideas and add one new one, specific heat capacity. Here is an equation that puts those hour ideas together: H = t m C p where H = heat absorbed or released (in J), t = change in temperature (in C), m = mass (in g), and C p = specific heat capacity (4.18 J/g C for water). Your homework assignment for tomorrow is to be prepared to do the following: Identify one of the terms or variables (i.e., H, t, m, C p ) that remained constant (i.e., did not change) as we compared the cold and warm water baths? 8

### Enzyme Action: Testing Catalase Activity

Enzyme Action: Testing Catalase Activity Experiment 6A Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically. Enzymes are globular proteins, responsible for most of the chemical activities

### ENZYME ACTION: TESTING CATALASE ACTIVITY

ENZYME ACTION: TESTING CATALASE ACTIVITY LAB ENZ 1.CALC From Biology with Calculators, Vernier Software & Technology, 2000 INTRODUCTION Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically.

### How Dense is SALT WATER? Focus Question What is the relationship between density and salinity?

Focus Question What is the relationship between density and salinity? Activity Overview Fresh water from the Mississippi River pours into the salty ocean water in the Gulf of Mexico. More than 152,400

### Energy Content of Fuels

Experiment 9 Energy content is an important property of fuels. This property helps scientists and engineers determine the usefulness of a fuel. Energy content is the amount of heat produced by the burning

### Vapor Pressure of Liquids

Vapor Pressure of Liquids Experiment 10 In this experiment, you will investigate the relationship between the vapor pressure of a liquid and its temperature. When a liquid is added to the Erlenmeyer flask

### 6 H2O + 6 CO 2 (g) + energy

AEROBIC RESPIRATION LAB DO 2.CALC From Biology with Calculators, Vernier Software & Technology, 2000. INTRODUCTION Aerobic cellular respiration is the process of converting the chemical energy of organic

### Experiment 6 Coffee-cup Calorimetry

6-1 Experiment 6 Coffee-cup Calorimetry Introduction: Chemical reactions involve the release or consumption of energy, usually in the form of heat. Heat is measured in the energy units, Joules (J), defined

### DETERMINATION OF PHOSPHORIC ACID CONTENT IN SOFT DRINKS

DETERMINATION OF PHOSPHORIC ACID CONTENT IN SOFT DRINKS LAB PH 8 From Chemistry with Calculators, Vernier Software & Technology, 2000 INTRODUCTION Phosphoric acid is one of several weak acids that present

### Reflectivity of Light

Reflectivity of Light Experiment 23 Light is reflected differently from various surfaces and colors. An understanding of these differences is useful in choosing colors and materials for clothing, in choosing

### Endothermic and Exothermic Reactions. Evaluation copy. Mg(s) + 2 HCl(aq) H 2 (g) + MgCl 2 (aq)

Endothermic and Exothermic Reactions Computer 1 Many chemical reactions give off energy. Chemical reactions that release energy are called exothermic reactions. Some chemical reactions absorb energy and

### Enzyme Action: Testing Catalase Activity 50 Points

Names: LabQuest Enzyme Action: Testing Catalase Activity 50 Points 6A Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically. Enzymes are globular proteins, responsible for most of the

### CONVECTION CURRENTS AND ANOMALOUS BEHAVIOUR OF WATER

CONVECTION CURRENTS AND ANOMALOUS BEHAVIOUR OF WATER Objective: To compare the thermal behaviour of water with that of other liquids, specifically alcohol and edible oil. To point out the anomaly of water

### Enzyme Action: Testing Catalase Activity

Enzyme Action: Testing Catalase Activity Experiment 6A Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically. Enzymes are globular proteins, responsible for most of the chemical activities

### Evaluation copy. Energy Content of Foods. computer OBJECTIVES MATERIALS

Energy Content of Foods Computer 10 Energy content is an important property of food. The energy your body needs for running, talking, and thinking comes from the food you eat. Energy content is the amount

### Appendix C. Vernier Tutorial

C-1. Vernier Tutorial Introduction: In this lab course, you will collect, analyze and interpret data. The purpose of this tutorial is to teach you how to use the Vernier System to collect and transfer

### Experiment 3 Limiting Reactants

3-1 Experiment 3 Limiting Reactants Introduction: Most chemical reactions require two or more reactants. Typically, one of the reactants is used up before the other, at which time the reaction stops. The

### Photosynthesis and Respiration

Photosynthesis and Respiration Experiment 31C Plants make sugar, storing the energy of the sun into chemical energy, by the process of photosynthesis. When they require energy, they can tap the stored

### Enzyme Action: Testing Catalase Activity

Enzyme Action: Testing Catalase Activity DataQuest 12 Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically. Enzymes are globular proteins, responsible for most of the chemical activities

### 3 Energy Content of Food

Lab Activity 3 ENERGY CONTENT OF FOOD LAB ACTIVITY 3 Energy Content of Food Purpose The purpose of the activity is to measure the energy content of different kinds of food by burning the food to warm a

### Experiment 2 Kinetics II Concentration-Time Relationships and Activation Energy

2-1 Experiment 2 Kinetics II Concentration-Time Relationships and Activation Energy Introduction: The kinetics of a decomposition reaction involving hydroxide ion and crystal violet, an organic dye used

### Pressure -Temperature Relationship in Gases. Evaluation copy. Figure 1. 125 ml Erlenmeyer flask. Vernier computer interface

Pressure -Temperature Relationship in Gases Computer 7 Gases are made up of molecules that are in constant motion and exert pressure when they collide with the walls of their container. The velocity and

### Osmosis. Evaluation copy

Osmosis Computer 5 In order to survive, all organisms need to move molecules in and out of their cells. Molecules such as gases (e.g., O 2, CO 2 ), water, food, and wastes pass across the cell membrane.

### Photosynthesis and Respiration

Photosynthesis and Respiration Experiment 31C Plants make sugar, storing the energy of the sun into chemical energy, by the process of photosynthesis. When they require energy, they can tap the stored

### ph units constitute a scale which allows scientists to determine the acid or base content of a substance or solution. The ph 0

ACID-BASE TITRATION LAB PH 2.PALM INTRODUCTION Acids and bases represent a major class of chemical substances. We encounter them every day as we eat, clean our homes and ourselves, and perform many other

### Experiment 17: Potentiometric Titration

1 Experiment 17: Potentiometric Titration Objective: In this experiment, you will use a ph meter to follow the course of acid-base titrations. From the resulting titration curves, you will determine the

### Physical Properties of a Pure Substance, Water

Physical Properties of a Pure Substance, Water The chemical and physical properties of a substance characterize it as a unique substance, and the determination of these properties can often allow one to

### Liberty High School Science Department Lab Report Format

Liberty High School Science Department Lab Report Format General Information: 12 pt Times New Roman font Double Spaced 1 inch margins Always write in third person Write in Full Sentences except for the

### Determining the Quantity of Iron in a Vitamin Tablet. Evaluation copy

Determining the Quantity of Iron in a Vitamin Tablet Computer 34 As biochemical research becomes more sophisticated, we are learning more about the role of metallic elements in the human body. For example,

### OIMB GK12 CURRICULUM

6 th Grade 6 BEAUTIFUL BLUBBER EXPERIMENT Oregon Science Content Standards: 6.3 Scientific Inquiry: Scientific inquiry is the investigation of the natural world based on observations and science principles

### Chemistry 212 VAPOR PRESSURE OF WATER LEARNING OBJECTIVES

Chemistry 212 VAPOR PRESSURE OF WATER LEARNING OBJECTIVES The learning objectives of this experiment are to explore the relationship between the temperature and vapor pressure of water. determine the molar

### Freezing Point Depression: Why Don t Oceans Freeze? Teacher Advanced Version

Freezing Point Depression: Why Don t Oceans Freeze? Teacher Advanced Version Freezing point depression describes the process where the temperature at which a liquid freezes is lowered by adding another

### Evaluation copy. Enzyme Action: Testing Catalase Activity (Method 1 O 2 Gas Sensor) Computer 2

Enzyme Action: Testing Catalase Activity (Method 1 O 2 Gas Sensor) Computer 2 Many organisms can decompose hydrogen peroxide (H 2 O 2 ) enzymatically. Enzymes are globular proteins, responsible for most

### The Determination of an Equilibrium Constant

The Determination of an Equilibrium Constant Computer 10 Chemical reactions occur to reach a state of equilibrium. The equilibrium state can be characterized by quantitatively defining its equilibrium

### Experiment 1: Colligative Properties

Experiment 1: Colligative Properties Determination of the Molar Mass of a Compound by Freezing Point Depression. Objective: The objective of this experiment is to determine the molar mass of an unknown

### USING TECHNOLOGY FOR DATA COLLECTION

USING TECHNOLOGY FOR DATA COLLECTION The advances in technology have provided a number of instruments for collecting and interpreting data. These include portable microscopes, electronic balances, ph meters,

### Neutralization Reactions. Evaluation copy

Neutralization Reactions Computer 6 If an acid is added to a base, a chemical reaction called neutralization occurs. An example is the reaction between nitric acid, HNO 3, and the base potassium hydroxide,

### Module 1, Lesson 3 Temperature vs. resistance characteristics of a thermistor. Teacher. 45 minutes

Module 1, Lesson 3 Temperature vs. resistance characteristics of a thermistor 45 minutes Teacher Purpose of this lesson How thermistors are used to measure temperature. Using a multimeter to measure the

### Liquid Conductivity: Measuring Conductivity in Saline Water Solutions (Teacher s Guide)

Liquid Conductivity: Measuring Conductivity in Saline Water Solutions (Teacher s Guide) OVERVIEW Students measure the conductivity of a solution of distilled water with varying amounts of NaCl and will

### Project 1.3.4 Renewable Insulation Example Teacher Notes

Project 1.3.4 Renewable Insulation Example Teacher Notes Sample Data and Teacher Notes This guide is designed to provide sample calculations, background, and tips for the teachers performing this project

### PHOTOSYNTHESIS AND RESPIRATION

PHOTOSYNTHESIS AND RESPIRATION STANDARDS: 3.2.10.B.3, 3.2.10.C.4 3.3.10.B.4 Westminster College INTRODUCTION Plants make sugar, storing the energy of the sun as chemical energy, by the process of photosynthesis.

### Chem 1B Saddleback College Dr. White 1. Experiment 8 Titration Curve for a Monoprotic Acid

Chem 1B Saddleback College Dr. White 1 Experiment 8 Titration Curve for a Monoprotic Acid Objectives To learn the difference between titration curves involving a strong acid with a strong base and a weak

### Solubility Curve of Sugar in Water

Solubility Curve of Sugar in Water INTRODUCTION Solutions are homogeneous mixtures of solvents (the larger volume of the mixture) and solutes (the smaller volume of the mixture). For example, a hot chocolate

### Learning outcomes. Students will be able to:

Learning structure of the lesson The big picture This lesson is designed to exemplify an argumentation approach to practical work, using a predict-observe-explain framework. Students often think that some

### Thermochemistry: Calorimetry and Hess s Law

Thermochemistry: Calorimetry and Hess s Law Some chemical reactions are endothermic and proceed with absorption of heat while others are exothermic and proceed with an evolution of heat. The magnitude

### Heat and Temperature: Teacher s Guide

Heat and Temperature: Teacher s Guide Grade Level: 6-8 Curriculum Focus: Physical Science Lesson Duration: Two class periods Program Description Humans have always been feverish about temperature. But

### SOLUBILITY OF A SALT IN WATER AT VARIOUS TEMPERATURES LAB

SOLUBILITY OF A SALT IN WATER AT VARIOUS TEMPERATURES LAB Purpose: Most ionic compounds are considered by chemists to be salts and many of these are water soluble. In this lab, you will determine the solubility,

### Enzyme Pre-Lab. Using the Enzyme worksheet and Enzyme lab handout answer the Pre-Lab questions the pre-lab must be complete before beginning the lab.

Enzyme Pre-Lab Using the Enzyme worksheet and Enzyme lab handout answer the Pre-Lab questions the pre-lab must be complete before beginning the lab. Background: In this investigation, you will study several

### Materials 10-mL graduated cylinder l or 2-L beaker, preferably tall-form Thermometer

VAPOR PRESSURE OF WATER Introduction At very low temperatures (temperatures near the freezing point), the rate of evaporation of water (or any liquid) is negligible. But as its temperature increases, more

### Cold Stuff. Thomas Jefferson National Accelerator Facility - Office of Science Education http://education.jlab.org/

Cold Stuff Cold Stuff What materials make good insulators? Problem Which substance makes the best insulator: cotton, air or steel wool? Research Answer the following True or False questions about insulators:

### GENERAL SCIENCE LABORATORY 1110L Lab Experiment 6: Ohm s Law

GENERAL SCIENCE LABORATORY 1110L Lab Experiment 6: Ohm s Law OBJECTIVES: To verify Ohm s law, the mathematical relationship among current, voltage or potential difference, and resistance, in a simple circuit.

### Project 4.2.1: Heart Rate

Project 4.2.1: Heart Rate Introduction Even before you were born, one of the first things your doctor did when you went for an office visit was listen to your heart. Your heart rate, the number of times

### Determination of Molar Mass by Freezing-Point Depression

DETERMINATION OF MOLAR MASS BY FREEZING-POINT DEPRESSION 141 Determination of Molar Mass by Freezing-Point Depression OBJECTIVES: Gain familiarity with colligative properties of nonelectrolyte solutions

### Weather Under Pressure

Primary Subject Integrated Subjects Grade Level Length of Unit Research Sources Science Math 5th 10 days Elementary Science with Vernier Book BrainPop www.areasonfor.com/site/1/docs/science_level_f_swt_lesson_20.pdf

### GETTING TO THE CORE: THE LINK BETWEEN TEMPERATURE AND CARBON DIOXIDE

DESCRIPTION This lesson plan gives students first-hand experience in analyzing the link between atmospheric temperatures and carbon dioxide ( ) s by looking at ice core data spanning hundreds of thousands

### Using Freezing-Point Depression to Find Molecular Weight

Usin Freezin-Point Depression to Find Molecular Weiht Experiment 15 When a solute is dissolved in a solvent, the freezin temperature is lowered in proportion to the number of moles of solute added. This

### Melting ice Student sheet

Melting ice Student sheet Predict Which ice cube will melt first? Observe Describe what you saw happen. Why? (Give a scientific explanation) Questions to think about: Why does ice melt? Why might one ice

### Activity Sheets Enzymes and Their Functions

Name: Date: Activity Sheets Enzymes and Their Functions amylase What are Enzymes? starch glucose Enzymes are compounds that assist chemical reactions by increasing the rate at which they occur. For example,

### Determining the Free Chlorine Content of Swimming Pool Water. HOCl H + + OCl. Evaluation copy

Determining the Free Chlorine Content of Swimming Pool Water Computer 33 Physicians in the nineteenth century used chlorine water as a disinfectant. Upon the discovery that certain diseases were transmitted

### Distillation Experiment

Distillation Experiment CHM226 Background The distillation process is a very important technique used to separate compounds based on their boiling points. A substance will boil only when the vapor pressure

### Evaluation copy. Build a Temperature Sensor. Project PROJECT DESIGN REQUIREMENTS

Build a emperature Sensor Project A sensor is a device that measures a physical quantity and converts it into an electrical signal. Some sensors measure physical properties directly, while other sensors

### Thermochemistry I: Endothermic & Exothermic Reactions

THERMOCHEMISTRY I 77 Thermochemistry I: Endothermic & Exothermic Reactions OBJECTIVES: Learn elementary concepts of calorimetry and thermochemistry Practice techniques of careful temperature, mass, and

### Evaluation copy. Titration of a Diprotic Acid: Identifying an Unknown. Computer

Titration of a Diprotic Acid: Identifying an Unknown Computer 25 A diprotic acid is an acid that yields two H + ions per acid molecule. Examples of diprotic acids are sulfuric acid, H 2 SO 4, and carbonic

### Transfer of heat energy often occurs during chemical reactions. A reaction

Chemistry 111 Lab: Thermochemistry Page I-3 THERMOCHEMISTRY Heats of Reaction The Enthalpy of Formation of Magnesium Oxide Transfer of heat energy often occurs during chemical reactions. A reaction may

### Energy Conversions I. Unit of measure (most common one) Form Definition Example

Energy Conversions I Energy can take many forms, but any one form can usually be converted into another. And no matter what form we talk about, we can use conversion factors to calculate equivalent amounts

### Phase Diagram of tert-butyl Alcohol

Phase Diagram of tert-butyl Alcohol Bill Ponder Department of Chemistry Collin College Phase diagrams are plots illustrating the relationship of temperature and pressure relative to the phase (or state

### STATIC AND KINETIC FRICTION

STATIC AND KINETIC FRICTION LAB MECH 3.COMP From Physics with Computers, Vernier Software & Technology, 2000. INTRODUCTION If you try to slide a heavy box resting on the floor, you may find it difficult

### Unit/Lesson Plan Title: Too Hot to Handle! Grade Level(s) 3. Research Sources

Unit/Lesson Plan Title: Too Hot to Handle! Primary Subject Integrated Subjects Grade Level(s) 3 Length of Unit Research Sources Unit Summary Key Vocabulary NC Essential Standards For Science Energy/Energy

### Class Copy! Class Copy! The process of photosynthesis can be expressed by the following word equation and chemical equation.

Floating Leaf Disk Photosynthesis Lab Introduction: Photosynthesis is a process that converts carbon dioxide into sugars such as glucose using energy from the sun. When light is absorbed by pigments in

### Activity 5. Two Hot, Two Cold. Introduction. Equipment Required. Collecting the Data

. Activity 5 Two Hot, Two Cold How do we measure temperatures? In almost all countries of the world, the Celsius scale (formerly called the centigrade scale) is used in everyday life and in science and

### Experiment: Static and Kinetic Friction

PHY 201: General Physics I Lab page 1 of 6 OBJECTIVES Experiment: Static and Kinetic Friction Use a Force Sensor to measure the force of static friction. Determine the relationship between force of static

### Experiment 6 Titration II Acid Dissociation Constant

6-1 Experiment 6 Titration II Acid Dissociation Constant Introduction: An acid/base titration can be monitored with an indicator or with a ph meter. In either case, the goal is to determine the equivalence

### SEPARATION OF A MIXTURE OF SUBSTANCES LAB

SEPARATION OF A MIXTURE OF SUBSTANCES LAB Purpose: Every chemical has a set of defined physical properties, and when combined they present a unique fingerprint for that chemical. When chemicals are present

### Bubbling Tablets. Objective: Investigate the effects of surface area on reaction rates.

Bubbling Tablets Objective: Investigate the effects of surface area on reaction rates. Key concepts Increasing the surface area of a reactant results in a faster reaction. Things on the nanoscale have

### VAPOR PRESSURE AS A FUNCTION OF TEMPERATURE. This laboratory covers material presented in section 11.8 of the 9 th Ed. of the Chang text.

VAPOR PRESSURE AS A FUNCTION OF TEMPERATURE Objectives: (1) Observe and measure the change in the vapor pressure (dependent variable) as a function of temperature (independent variable). (2) Analyze the

### Physics Labs with Computers, Vol. 2 P38: Conservation of Linear Momentum 012-07001A

Name Class Date Activity P38: Conservation of Linear Momentum (Motion Sensors) Concept DataStudio ScienceWorkshop (Mac) ScienceWorkshop (Win) Newton s Laws P38 Linear Momentum.DS P16 Cons. of Momentum

### Evaluation copy. Case File 9. A Killer Cup of Coffee? GlobalTech manager dies

Case File 9 Killer Cup of Coffee: Using colorimetry to determine concentration of a poison Determine the concentration of cyanide in the solution. A Killer Cup of Coffee? SOUTH PAINTER, Tuesday: It was

### And Now, the Weather Describing Data with Statistics

And Now, the Weather Describing Data with Statistics Activity 29 Meteorologists use mathematics interpret weather patterns and make predictions. Part of the job involves collecting and analyzing temperature

### Partner: Jack 17 November 2011. Determination of the Molar Mass of Volatile Liquids

Partner: Jack 17 November 2011 Determination of the Molar Mass of Volatile Liquids Purpose: The purpose of this experiment is to determine the molar mass of three volatile liquids. The liquid is vaporized

### DIFFUSION (HYPERTONIC, HYPOTONIC, & ISOTONIC SOLUTIONS) THE GUMMY BEAR LAB PASS

DIFFUSION (HYPERTONIC, HYPOTONIC, & ISOTONIC SOLUTIONS) THE GUMMY BEAR LAB PASS Have you ever wondered why your fingers have wrinkles after soaking in a bath tub? Your students have probably wondered the

### Experiment 12E LIQUID-VAPOR EQUILIBRIUM OF WATER 1

Experiment 12E LIQUID-VAPOR EQUILIBRIUM OF WATER 1 FV 6/26/13 MATERIALS: PURPOSE: 1000 ml tall-form beaker, 10 ml graduated cylinder, -10 to 110 o C thermometer, thermometer clamp, plastic pipet, long

### Absorbance Spectrophotometry: Analysis of FD&C Red Food Dye #40 Calibration Curve Procedure

Absorbance Spectrophotometry: Analysis of FD&C Red Food Dye #40 Calibration Curve Procedure Note: there is a second document that goes with this one! 2046 - Absorbance Spectrophotometry. Make sure you

### Energetic Reactions: Ice Cream Experiment Teacher Guide

Module Overview Heat transfer is an important part of many chemical reactions, but it is often not directly observed. In this module students conduct an experiment making homemade ice cream that requires

### Quick Reference Manual

Quick Reference Manual ii TABLE OF CONTENTS This guide first leads you through the basics of Logger Pro, including software installation procedures. You will learn how to collect data, manually enter data,

### Enzyme Lab. DEFINITIONS: 1. Enzyme: 2. Catalase: 3. Catalyze: 4. Hydrolysis: 5. Monomer: 6. Digestion: BACKGROUND INFORMATION

Enzyme Lab DEFINITIONS: 1. Enzyme: 2. Catalase: 3. Catalyze: 4. Hydrolysis: 5. Monomer: 6. Digestion: BACKGROUND INFORMATION Many living tissues contain the enzyme catalase. This enzyme breaks down hydrogen

### Waves: Recording Sound Waves and Sound Wave Interference (Teacher s Guide)

Waves: Recording Sound Waves and Sound Wave Interference (Teacher s Guide) OVERVIEW Students will measure a sound wave by placing the Ward s DataHub microphone near one tuning fork A440 (f=440hz). Then

### PREPARATION FOR CHEMISTRY LAB: COMBUSTION

1 Name: Lab Instructor: PREPARATION FOR CHEMISTRY LAB: COMBUSTION 1. What is a hydrocarbon? 2. What products form in the complete combustion of a hydrocarbon? 3. Combustion is an exothermic reaction. What

### Chapter Test B. Chapter: Measurements and Calculations

Assessment Chapter Test B Chapter: Measurements and Calculations PART I In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1.

### LAB 15: HEAT ENGINES AND

251 Name Date Partners LAB 15: HEAT ENGINES AND THE FIRST LAW OF THERMODYNAMICS... the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity

### Hands-On Labs SM-1 Lab Manual

EXPERIMENT 4: Separation of a Mixture of Solids Read the entire experiment and organize time, materials, and work space before beginning. Remember to review the safety sections and wear goggles when appropriate.

### Unit/Lesson Plan Title: Transfer of Heat: Conduction. Integrated Subjects Math Grade Level(s) 5

Unit/Lesson Plan Title: Transfer of Heat: Conduction Primary Subject Physical Science Integrated Subjects Math Grade Level(s) 5 Length of Unit 2 weeks Research Sources http://www.teachertube.com/viewvideo.php?video_id=186099

### 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

### Exploring Magnetism. DataQuest

Exploring Magnetism Magnetism is the force of attraction or repulsion between a magnet and something else. Magnets attract materials made of iron, nickel, or cobalt. Can you think of five things to which

### Analyzing Weather Data

Analyzing Weather Data Lesson Concept Link Scientists analyze data gathered from weather tools to predict weather. At the beginning of this unit, each measuring tools was introduced, and over time students

### Chemical Changes. Measuring a Chemical Reaction. Name(s)

Chemical Changes Name(s) In the particle model of matter, individual atoms can be bound tightly to other atoms to form molecules. For example, water molecules are made up of two hydrogen atoms bound to

### Basic Use of the TI-84 Plus

Basic Use of the TI-84 Plus Topics: Key Board Sections Key Functions Screen Contrast Numerical Calculations Order of Operations Built-In Templates MATH menu Scientific Notation The key VS the (-) Key Navigation

### Can Gases Act Like a Greenhouse?

Can Gases Act Like a Greenhouse? Activity 1 Following a discussion that enables student to express what they already know about the greenhouse effect, students conduct a controlled experiment to confirm

### Chapter 10: Temperature and Heat

Chapter 10: Temperature and Heat 1. The temperature of a substance is A. proportional to the average kinetic energy of the molecules in a substance. B. equal to the kinetic energy of the fastest moving

### Calorimetry: Heat of Vaporization

Calorimetry: Heat of Vaporization OBJECTIVES INTRODUCTION - Learn what is meant by the heat of vaporization of a liquid or solid. - Discuss the connection between heat of vaporization and intermolecular