ATOMIC AND MOLECULAR ATTRACTION
|
|
- Vernon Lambert
- 6 years ago
- Views:
Transcription
1 ATOMIC AND MOLECULAR ATTRACTION Name(s) PART 1 DROPS ON A PENNY Assemble the following materials: three pennies, two eye droppers, several paper towels, a small cup of water, a small cup of alcohol, and a small cup of liquid soap. Rub the pennies clean with a paper towel to remove any oil that might be on their surfaces. After this, try not to handle the pennies with your bare hands as this will deposit additional oil on their surfaces. 1. Place one of the pennies on a paper towel. Predict how many drops of water you will be able to place on the penny without getting the paper towel wet, and write your prediction here: 2. Now place drops of water on top of the penny, one drop at a time, and note the shape of the water on the penny as the water increases in volume. Continue adding(and counting) water drops until the water spills onto the paper towel. Record the number of drops here: 3. Draw the shape that the water took on top of the penny as the drops began to build up. 4. You can explain the shape of the water on top of the penny based on a model which says that liquid water molecules attract each other. Make such an explanation below: 5. Repeat the procedure given above, only this time place alcohol drops on a different penny. Record your results below. Make sure the drops of alcohol are about the same size as the drops of water you used before. (Note: the alcohol drops tend to be smaller than the water drops. You might have to compensate for this by occasionally adding an extra drop of alcohol to make the comparison fair.) 6. Based on your observations, which has a greater attractive force: one water molecule on another, or one alcohol molecule on another? UNIT 2 PARTICULATE NATURE OF MATTER II-51 CALVIN COLLEGE
2 7. Now mix several drops of liquid soap into the cup of water. Using the third penny, determine how many drops of the soap/water mixture can be piled on top of the penny before it spills on to the paper towel. Record your results below, and comment on what the soap seems to have done to the attractive forces between the water molecules. PART 2 SURFACE TENSION Using a set of tweezers, obtain two small metal pins from the supply area. Be very careful NOT to touch these pins with your hands, as you will get oil on the pins and ruin the next activity. Place these pins on a paper towel until you are ready to use them. Rinse out your cup of water thoroughly so as to remove all soap traces, and then refill the cup with water. 1. Using the tweezers, carefully place one of the pins on top of the water in your cup. If you are very careful you can get the pin to stay on top of the water and not sink to the bottom of the cup. (Please note: your pin is not floating on the water. Solid metal is too dense to float. Something else is occurring. Notice how the surface of the water around the pin is being distorted. In order to prove that the pin is not floating, you may push the pin under the surface of the water and see that it does not come back up.) Explain this surface tension effect based on your results in Part Based on your results in Part 1, do you think it will be just as easy or perhaps harder to get a pin to stay on top of the alcohol in your other cup? Make a prediction below, and explain your reasoning. UNIT 2 PARTICULATE NATURE OF MATTER II-52 CALVIN COLLEGE
3 3. Now use your tweezers and see if a pin will remain on top of alcohol. Discuss your results below. 4. Which do you think might evaporate quicker at room temperature, water or alcohol? Use your model of molecular attraction to explain your prediction. (Note: There are other factors which affect the rate of evaporation of a liquid besides the magnitude of the molecular attraction. Included in these factors would be the mass of the molecules involved.) 5. Place one drop of water and one drop of alcohol on the table and see which evaporates first. You may wish to lightly blow over the tops of the drops to speed the process. Write down which one evaporated first, and compare this result with your prediction. PART 3 DISRUPTING SURFACE TENSION You have already seen in Part 1 that you can sometimes change the magnitude of the molecular attraction existing between two molecules by introducing a third, different molecule. You can demonstrate this dramatically with soap and water. 1. Again using the tweezers, carefully place a pin on top of the water in your cup. 2. Dip one of your fingers into a small bit of liquid soap, and then gently touch the surface of the water with your soapy finger. Describe what you observe. UNIT 2 PARTICULATE NATURE OF MATTER II-53 CALVIN COLLEGE
4 3. Did the soap increase or decrease the surface tension of the water? 4. Did the soap increase or decrease the molecular attractions of the water molecules? 5. Give an explanation of how adding soap to water helps you to clean things better than when you use water alone. 6. Obtain a clean cup containing no soap residue. Fill it half full with water, and sprinkle pepper on the top of the water. Next, dip a finger into some liquid soap, and then gently touch the surface of the water near one edge of the cup with your soapy finger. Watch the pepper move around for a minute or two. 7. Prepare a Share Sheet with others at your table which explains what you observed with the pepper, soap, and water. (Do not simply describe what you saw, but give a reason for what you saw based on molecular attraction.) UNIT 2 PARTICULATE NATURE OF MATTER II-54 CALVIN COLLEGE
5 Optional Tie a piece of thread into a loop, and float the loop in a cup of water containing no soap residue. Add a drop of liquid soap inside the loop and describe what happens. What is the explanation? Rinse out the container, and float another loop of thread on top of the water. This time add a drop of liquid soap outside the loop. Again describe what happens and offer an explanation. PART 4 LIQUID TO SOLID ATTRACTION So far you have seen that molecules in the liquid state attract each other. However, attraction between molecules tends to occur whether the molecules are in the solid, liquid, or gas state. The next activity demonstrates the attraction between molecules in the liquid state and those in the solid state. Activity #1 Spill a drop of each of the following liquids down a waxed paper incline: a. Vegetable oil b. Water c. Soapy water d. Alcohol UNIT 2 PARTICULATE NATURE OF MATTER II-55 CALVIN COLLEGE
6 Draw a diagram to show the kind of trail left by each drop. Describe which of the liquids seems most attracted to the waxed paper, and which of the liquids seems least attracted to the paper. Activity #2 Dip one end of a long strip of paper towel into a cup of water, and watch the water climb up the towel. Explain what you see in terms of the solid/liquid attraction between water and paper, and the liquid/liquid attraction between water molecules. UNIT 2 PARTICULATE NATURE OF MATTER II-56 CALVIN COLLEGE
7 Particle Attraction Content Overview The tendency of water molecules to form droplets shows that the individual molecules of water tend to attract each other. Another example of the attraction molecules have for each other can be demonstrated by trying to stick your hand through your tabletop. See how well those molecules in the tabletop stick together? Many of the features of solids, liquids, and gases can be explained by combining our knowledge of this attraction between molecules with what we know about temperature and motion. To illustrate, let s consider the three phases of water. At low temperatures, water forms ice. Water--and many other solids--form crystals in which the individual molecules are arranged in very specific patterns. In a solid the attraction between the molecules holds each individual molecule in its assigned place. The particles can vibrate some, but they can not move around throughout the solid. In other solids (not crystals) the molecules are arranged somewhat randomly, but they are still held in place. If a solid is heated, the particles increase their random motions, and in particular they vibrate more vigorously. If the temperature is increased enough, the molecules can escape their assigned locations and begin to move about more freely. However, because of their continual attraction for each other, they may not yet be moving fast enough to escape completely from other molecules. Instead, in a liquid, the individual molecules can move anywhere within the fluid, but they may not leave the region of the fluid. (One model of a liquid is bowling balls rolling around on a trampoline. Each ball is free to move around on the trampoline, but because of the collective weight of the bowling balls, they will tend to stay near the center of the trampoline. Of course, for molecules, it isn t gravity that causes them to stay together. Molecular attraction is an electrical effect.) If the temperature is increased still more, the individual molecules can get moving fast enough to escape the attraction to other molecules, and they can begin to move completely independently. (Think of the bowling balls on the trampoline now moving fast enough to roll off the outer edge of the trampoline.) In this case we have a gas, and if the particles are in a container they will fill the entire container. It is reasonable at this point to ask what causes the attraction between atoms and molecules. The answer to this question is electric charge. In order to understand electric charge, you must first modify the particle model you have been working with and note that atoms themselves are made up of even smaller particles called neutrons, protons, and electrons. Protons are said to have a positive charge, and electrons are said to have a negative charge. Our extended model for atoms then says that two different kinds of charges (a positive and a negative) will attract each other, but, two similar charges (two negatives or two positives) will repel each other. Neutrons (which is a term derived from the word neutral) do not have any charge. Therefore, they do not cause any attraction (or repulsion) between atoms. It is the protons and the electrons which cause the attraction (and sometimes repulsion) between two atoms or two molecules. An atom s protons and neutrons are held tightly together near the center of the atom (called the nucleus). The electrons form some sort of cloud whirling around the nucleus. The electrons usually can not stray very far away from the nucleus because the positive charges of the protons attract them towards the nucleus. Most atoms are electrically neutral - having equal numbers of electrons and protons. However, UNIT 2 PARTICULATE NATURE OF MATTER II-57 CALVIN COLLEGE
8 sometimes an electron or two can be pulled away from the atom, and then the entire atom is left with an excess positive charge. On the other hand, sometimes an extra electron or two can be made to attach to an atom. In this case the atom is left with an excess of negative charge. UNIT 2 PARTICULATE NATURE OF MATTER II-58 CALVIN COLLEGE
Intermolecular forces: Background
Intermolecular forces: Background Electrostatics Up until now, we have just discussed attractions between molecules in the area of the covalent bond. Here, atoms within a molecule are attracted to one
More informationSurface Tension: Liquids Stick Together Student Version
Surface Tension: Liquids Stick Together Student Version In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. These principles will be demonstrated
More informationSurface Tension: Liquids Stick Together Student Advanced Version
Surface Tension: Liquids Stick Together Student Advanced Version In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. These principles will be demonstrated
More informationChapter 5, Lesson 2 Surface Tension
Chapter 5, Lesson 2 Surface Tension Key Concepts The attraction of molecules at the surface of a liquid is called surface tension. The polarity of water molecules can help explain why water has a strong
More informationSurface Tension: Liquids Stick Together Teacher Version
Surface Tension: Liquids Stick Together Teacher Version In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. These principles will be demonstrated
More informationChapter 5, Lesson 1: Water is a Polar Molecule
Chapter 5, Lesson 1: Water is a Polar Molecule Key Concepts The water molecule, as a whole, has 10 protons and 10 electrons, so it is neutral. In a water molecule, the oxygen atom and hydrogen atoms share
More informationStatic Electricity Lab Part 1
Static Electricity Lab Part 1 Objective: Understand how electric charges interact and how static electricity builds up and transfers. Materials: balloons unflavored gelatin flat plate ping-pong ball Procedure:
More informationStation 1 Water is a polar molecule and has a very unique structure
Station 1 Water is a polar molecule and has a very unique structure A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is
More informationSurface Tension: Liquids Stick Together Advanced Student Version
Surface Tension: Liquids Stick Together Advanced Student Version Image from www.eyefetch.com In this lab you will learn about surface tension. Surface tension is a special property of liquids that allows
More informationPreAP Properties of Water Lab
PreAP of Water Lab Background The structure of the water molecule gives water unique properties. Water is a polar molecule, which means that it has a region with a slight negative charge (the oxygen atom),
More informationLesson 1 Solids, Liquids, and Gases
Lesson 1 Student Labs and Activities Page Launch Lab 8 Content Vocabulary 9 Lesson Outline 10 MiniLab 12 Content Practice A 13 Content Practice B 14 School to Home 15 Key Concept Builders 16 Enrichment
More informationELECTRIC CHARGE. 3. Is there any evidence of interaction between the can and the balloon?
ELECTRIC CHARGE Name Partners' Names Part 1 The Existence of Charge A) 1. Place an empty soda pop can on its side on a flat table. 2. Fully inflate a balloon. Hold the balloon next to the side of the can,
More informationKitchen Chemistry Test 1
Roy1 Penny water-droplet lab Kitchen Chemistry Test 1 Question: How many drops of water will fit on the surface of a clean, dry penny? Make a hypothesis, and then continue. Hypothesis: I think that if
More informationChapter 5, Lesson 1: Water is a Polar Molecule
Chapter 5, Lesson 1: Water is a Polar Molecule Key Concepts The water molecule, as a whole, has 10 protons and 10 electrons, so it is neutral. In a water molecule, the oxygen atom and hydrogen atoms share
More informationINTERMOLECULAR FORCES LAB STATION 1 SURFACE TENSION
INTERMOLECULAR FORCES LAB STATION 1 SURFACE TENSION LEARNING TARGET: You should be able to identify the comparative strength of intermolecular forces through observations of the surface tension in droplets.
More informationLeonie Boshoff-Mostert Edited by Anne Starace
GASES, LIQUIDS AND SOLIDS Density Leonie Boshoff-Mostert Edited by Anne Starace Abstract Matter is sorted into three groups: solids, liquids and gases. Solids, liquids and gases each have characteristic
More informationStates of Matter: A Solid Lesson where Liquids Can be a Gas!
TEACHER GUIDE STATES OF MATTER 60 Minute Physical Science Lesson Science- to- Go! Program Grades: 1-3 States of Matter: A Solid Lesson where Liquids Can be a Gas! Description Your classroom will be converted
More informationChapter 2, Lesson 5: Changing State Melting
Chapter 2, Lesson 5: Changing State Melting Key Concepts Melting is a process that causes a substance to change from a solid to a liquid. Melting occurs when the molecules of a solid speed up enough that
More informationLesson Plan Unit Plan: Topic: Grade and Content: Do Now: Aim: Performance Objectives: Vocabulary: Material Lists: Safety and Disposal:
Lesson Plan Unit Plan: Chemical Bonding Topic: Hydrogen Bonding Grade and Content: 10th Grade Chemistry (Second Period 8:52 9:45) Do Now: Read the hydrogen bonding activity and be ready to explain the
More informationCastle Challenge Teacher Instructions (First Third Grade)
Castle Challenge Teacher Instructions (First Third Grade) The set of experiments explores the concept of surface tension. Students are asked to help Prince Charming save his princess from the castle by
More informationAtoms and molecules are in motion and have energy
Atoms and molecules are in motion and have energy By now you know that substances are made of atoms and molecules. These atoms and molecules are always in motion and have attractions to each other. When
More informationMost substances can be in three states: solid, liquid, and gas.
States of Matter Most substances can be in three states: solid, liquid, and gas. Solid Particles Have Fixed Positions The particles in a solid are very close together and have an orderly, fixed arrangement.
More informationLab #20: Observing the Behavior of Electrons
Lab #20: Observing the Behavior of Electrons Background: In today s lab we will examine the attractive forces that hold molecules together and the disruptive forces that break them apart. The forces between
More informationProcedure: 1. On your wax paper, place 5-10 drops of water in one area. 3. What do you notice the water does on the wax paper?
Properties Lab NAME: Date: Background: is everywhere. It makes up about 3/4ths of the surface of the earth. It makes up 50-95% of the weight of living organisms. It is in the air we breathe, the sinks
More information#2: THE FLOATING PAPER CLIP
Activity #1: PILE IT ON. Materials: 1 DRY penny, 1 eye dropper, water. Procedure: Make sure the penny is dry. Begin by estimating the number of drops of water that can be piled on the penny before it spills
More informationPre-LAB 1 Preparation: Electric Charge & Electric Interactions
Name: Lab Partners: Date: Pre-LAB 1 Preparation: Electric Charge & Electric Interactions Directions: Read over the lab handout and then answer the following questions. Question 1 What are the two hypotheses
More informationElectrostatics. Experiment NC. Objective. Introduction. Procedure
Electrostatics Experiment NC Objective In this experiment you will explore various aspects of electrostatic charging and electrostatic forces. Introduction You are probably aware of various phenomena associated
More informationParticle symbol. electron negative outside nucleus e
What Is Static Electricity? Have you ever had your hair stand up after putting on, or taking off, a sweater (Figure 1)? Or have you perhaps noticed that a balloon placed near your head will attract your
More informationYou have studied the elements before. All of the known elements are organized in the periodic table.
Building for Physics, Mr. Kent van de Graaff Reading You have studied the elements before. All of the known elements are organized in the periodic table. The smallest particle of an element is the atom
More informationSOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES
30 SOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES * Gas molecules are small compared to the space between them. * Gas molecules move in straight lines
More informationPS 12b Lab 1a Basic Electrostatics
Names: 1.) 2.) 3.) PS 12b Lab 1a Basic Electrostatics Learning Goal: Familiarize students with the concepts of charge, charge interaction, charge transfer, and polarization. We will also illustrate a way
More informationChemistry, physical science, problem solving
Subject Area(s) Associated Unit Associated Lesson Activity Title Grade Level 11 (9-12) Chemistry, physical science, problem solving Water Powered Boats Time Required 30 minutes Group Size 28 Expendable
More information3/9/2016. Chapter 25 Electric Charges and Forces. Chapter 25 Preview. Chapter 25 Preview
Chapter 25 Electric Charges and Forces Pickup PSE3e Photo from page 720, lightning (perhaps change the fonts and make this photo fill the entire slide) Chapter Goal: To describe electric phenomena in terms
More informationHistory. The word electricity comes from the Greek elektron which means amber. The amber effect is what we call static electricity.
Electrostatics 1 History The word electricity comes from the Greek elektron which means amber. The amber effect is what we call static electricity. 2 ELECTROSTATICS the study of electric charges, forces
More informationNote on Posted Slides
Note on Posted Slides These are the slides that I intended to show in class on Wed. Mar. 13, 2013. They contain important ideas and questions from your reading. Due to time constraints, I was probably
More informationNewton s Wagon. Materials. friends rocks wagon balloon fishing line tape stopwatch measuring tape. Lab Time Part 1
Newton s Wagon Overview: The natural state of objects is to follow a straight line. In fact, Newton s First Law of Motion states that objects in motion will tend to stay in motion unless they are acted
More informationChapter 1, Lesson 3: The Ups and Downs of Thermometers
Chapter 1, Lesson 3: The Ups and Downs of Thermometers Key Concepts The way a thermometer works is an example of heating and cooling a liquid. When heated, the molecules of the liquid in the thermometer
More informationName: SNC1 Date: Investigation Electrostatic Series
ACTIVITY #1 Purpose: To determine how charged objects respond to one another and what kind of charge is transferred when a charged object contacts an uncharged one. Pre Lab Questions 1. When acetate and
More informationScience Wednesday - Friday September 21st - 23rd EQ: How is water important? What gives water its unique properties?
Science Wednesday - Friday September 21st - 23rd EQ: How is water important? What gives water its unique properties? On your desk: Paper Pencil for notes Assignments: Thirsty Abe Climbing Water Water Metal
More informationStates of Matter: Solid, Liquid, and Gas
Movie Special Effects Activity 2 States of Matter: Solid, Liquid, and Gas GOALS In this activity you will: Create an animation to illustrate the behavior of particles in different phases of matter, and
More informationActivity 3.2: What holds the atoms of a molecule together?
Activity 3.2: What holds the atoms of a molecule together? In the previous investigations, you explored the idea that matter is made up of positive and negative particles that can attract or repel each
More informationStates of Matter Part 1: Lab Stations A. Initial Observations
States of Matter POGIL Activity Name Date Block Part 1: Lab Stations A. Initial Observations At your station you will find some solid aluminum, liquid water, and gaseous air. Observe these three objects
More informationMatter, Atoms & Molecules
Matter, Atoms & Molecules Matter is anything that has mass and takes up space. All matter is made of tiny particles called atoms, which are too small to see with the naked eye. Matter Matter is anything
More informationEssential Questions: How does electricity work, and why does it form? How can electricity be useful?
Essential Questions: How does electricity work, and why does it form? How can electricity be useful? Appliances Lamps Computers Refrigerators Microwaves Flashlights Cell phones Video games All matter is
More informationChapter 20 & 21: Electrostatics
There are four forces that exist in nature: 1. 2. 3. 4. Chapter 20 & 21: Electrostatics, that is, they only act over very small distances. and can act over very large distances. Rules of Electrostatics:
More informationThis Rocks! Author: Sara Kobilka Institute for Chemical Education and Nanoscale Science and Engineering Center University of Wisconsin-Madison
This Rocks! Author: Sara Kobilka Institute for Chemical Education and Nanoscale Science and Engineering Center University of Wisconsin-Madison Purpose: To learn about the rock cycle and the role that weather
More informationElectrostatics x C.
Electrostatics Theory The study of charges at rest is called electrostatics. You are no doubt aware that objects can acquire excess amounts of charge by contact. What happens when you walk across a carpeted
More informationMr. Mott. Polar/Nonpolar and Water Lab. Introduction:
AP Biology Mr. Mott (source: Mrs. Miriello) Polar/Nonpolar and Water Lab Name Class Period Introduction: Solutions are homogeneous mixtures comprised of a solute (the dissolved substances) mixed in a solvent
More informationCohesion, Surface Tension, and Adhesion
Cohesion, Surface Tension, and Adhesion Content Objectives SWBAT describe how hydrogen bonding allows water molecules to maintain strong cohesion, adhesion, and surface tension. Van der Waals Forces The
More informationEssential Questions: How does electricity work, and why does it form? How can electricity be useful?
Essential Questions: How does electricity work, and why does it form? How can electricity be useful? Appliances Lamps Computers Refrigerators Microwaves Flashlights Cell phones Video games All matter is
More informationSeparating Mixtures. Name: Class:
Separating Mixtures Name: Class: Directions: Match the words with the big ideas by writing the letter beside the idea. Use the same words in the short article below. Use key words and phrases from the
More informationUnit 2: Electrostatics
Unit 2: Electrostatics You probably associate electrostatics with physics class, but you probably also have lots of experience with static electricity at home. Of course, it s the same stuff! 1 I. What
More informationWhat are some properties of interactions involving electrified objects?
UNIT SE Developing Ideas ACTIVITY 1: Exploring Static Electric Effects Purpose In the previous unit you explored some magnetic effects and then went on to develop a model that explains these effects in
More informationAtoms, Molecules, and Life
1 Atoms, Molecules, and Life The Nature of Matter: Atoms and Molecules Elements All matter is composed of chemical elements, substances that cannot be broken down to other substances by ordinary chemical
More information7.2. Electric Force 7-2A. What Is the Attraction to Water? Words to Know. Find Out ACTIVITY. Materials. What Did You Find Out?
7.2 Electric Force Electric force acts on objects even if they are not touching. Objects with the same charge repel each other. Objects with opposite charges attract each other. Neutral objects are attracted
More informationInternational Journal of Mathematics and Computer Sciences (IJMCS) Vol.10 October 2012 International Scientific Researchers (ISR) ISSN:
California Physics Standard 5e Send comments to: layton@physics.ucla.edu Electric and magnetic phenomena are related and have many practical applications As a basis for understanding this concept: e. Students
More informationStation 1: Ionic versus Covalent Bonds / Electrolytes
Station 1: Ionic versus Covalent Bonds / Electrolytes The salt and sugar on your kitchen table are both white crystals that dissolve easily in water, but the solutions they form have an important difference.
More informationTHIRD GRADE WATER 1 WEEK LESSON PLANS AND ACTIVITIES
THIRD GRADE WATER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF THIRD GRADE WATER WEEK 1. PRE: Comparing the different components of the water cycle. LAB: Contrasting water with hydrogen peroxide.
More informationOobleck: A Program about States of Matter Presented by the Sciencenter in Ithaca, NY. Program Overview
Oobleck: A Program about States of Matter Presented by the Sciencenter in Ithaca, NY Program Overview Oobleck introduces students to states of matter and scientific observation. The program is designed
More informationPost-Show. Chemistry. Periodic Table of the Elements. After the Show. Traveling Science Shows
Traveling Science Shows Post-Show Chemistry After the Show We recently presented a Chemistry show at your school, and thought you and your students might like to continue investigating this topic. The
More informationRashid School for Boys. Year 7 Science. Particles. Name: Form:
Rashid School for Boys Year Science Particles Name: Form: 1 By the end of this topic.. Unit Particles Level 3 I know that ice melts when it gets too warm and that liquid water turns into solid water (ice)
More informationElectric Charge and Force
CHAPTER 17 21 SECTION Electricity Electric Charge and Force KEY IDEAS As you read this section, keep these questions in mind: What are the different kinds of electric charge? How do materials become electrically
More information2. What type of bonding allows water to attract other water molecules? 3. What is the difference between solutions and mixtures?
Biology Lab Name(s) Period: Date: Purpose: To investigate the properties of water, ph, and enzymes that biologically impact biological functions. Background Information: Water: Sometimes we call water
More informationLesson 1 Matter and Its Properties
Lesson 1 Student Labs and Activities Page Launch Lab 8 Content Vocabulary 9 Lesson Outline 10 MiniLab 12 Content Practice A 13 Content Practice B 14 Math Skills 15 School to Home 16 Key Concept Builders
More informationAtomic Structure and the Periodic Table
Structure and the Structure Atoms are made of three particles: 1. Protons = positive 2. Neutrons = neutral 3. Electrons = negative The protons and neutrons are in the center of the atom (the nucleus) Electrons
More informationELECTRICITY. This chain is similar to the fire fighter's bucket brigades in olden times. But
ELECTRICITY Electricity figures everywhere in our lives. Electricity lights up our homes, cooks our food, powers our computers, television sets, and other electronic devices. Electricity from batteries
More informationSeparating the Mixture
Separating the Mixture 40- to 1 50-minute session ACTIVITY OVERVIEW I N V E S T 5 I O N I G AT Students perform their procedures written in Activity 3, A Plan to Separate the Mixture, to physically separate
More informationIdentifying Solids 1-2 KEY CONCEPTS AND PROCESS SKILLS KEY VOCABULARY ACTIVITY OVERVIEW L A B O R ATO R Y A-69
Identifying Solids 40- to 1-2 50-minute sessions ACTIVITY OVERVIEW 7 L A B O R ATO R Y Students conduct tests on the solids separated from the mixture to gain information about the physical and chemical
More informationSuperconductivity. Never store liquid nitrogen in a container with a tight fitting lid.
Superconductivity 1 Introduction In this lab we will do some very simple experiments involving superconductors. You will not have to take much data; much of what you do will be qualitative. However, in
More informationTA guide Physics 208 Spring 2008 Lab 3 (E-1): Electrostatics
Name TA guide Physics 208 Spring 2008 Lab 3 (E-1): Electrostatics Section OBJECTIVE: To understand the electroscope as an example of forces between charges, and to use it as a measuring device to explore
More informationPHYSICS. Chapter 22 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 22 Lecture RANDALL D. KNIGHT 2017 Pearson Education, Inc. Chapter 22 Electric Charges and Forces IN THIS CHAPTER, you will learn that
More informationScience Is A Verb! Part 7. Let s do it! ISBN
Let s do it! Science Is A Verb! Part 7 ISBN 978-1-847003-60-7 Contents INTRODUCTION Lab Title Where are we positioned? Students know position is defined in relation to some choice of a standard reference
More informationPHY222 Lab 1 Electric Charge Positive and negative electric charge, electroscope, phenomenon of electrical induction
PHY222 Lab 1 Electric Charge Positive and negative electric charge, electroscope, phenomenon of electrical induction Print Your Name Print Your Partners' Names Instructions September 4, 2015 Before the
More information- As for the liquids, the properties of different solids often differ considerably. Compare a sample of candle wax to a sample of quartz.
32 SOLIDS * Molecules are usually packed closer together in the solid phase than in the gas or liquid phases. * Molecules are not free to move around each other as in the liquid phase. Molecular/atomic
More informationStatic Electricity. (A Qualitative Study of Electrostatics using Sticky Tape)
Goals: (A Qualitative Study of Electrostatics using Sticky Tape) To become familiar with basic electrostatic phenomena To learn the charge model and learn to apply it to conductors and insulators To understand
More informationHow Does the Sun s Energy Cause Rain?
1.2 Investigate 3.3 Read How Does the Sun s Energy Cause Rain? In the water-cycle simulation, you observed water change from a liquid to a gas, and then back to a liquid falling to the bottom of the container.
More informationStates of Matter: Solid, Liquid, and Gas
Movie Special Effects Activity 2 States of Matter: Solid, Liquid, and Gas GOALS In this activity you will: Create an animation to illustrate the behavior of particles in different phases of matter, and
More informationElectrostatics: Coulomb's Law
Electrostatics: Coulomb's Law Objective: To learn how excess charge is created and transferred. To measure the electrostatic force between two objects as a function of their electrical charges and their
More informationElectric Charge & Force Problems - 1 v Goodman & Zavorotniy
Electric Charge Chapter Questions 1. What happens to a plastic rod when it is rubbed with a piece of animal fur? What happens to the piece of fur? 2. How many types of electric charge are there? What are
More informationElectrostatics II. Introduction
Electrostatics II Objective: To learn how excess charge is created and transferred. To measure the electrostatic force between two objects as a function of their electrical charges and their separation
More informationQuestion Sheet for Laboratory 3: E-1: Electrostatics
Name Section Question Sheet for Laboratory 3: E-1: Electrostatics PART I. CHARGE OBJECTIVE: To build a qualitative model for charge by observing forces between charged objects. APPARATUS: 1. Tape, hard
More informationChromatography Lab # 4
Chromatography Lab # 4 Chromatography is a method for separating mixtures based on differences in the speed at which they migrate over or through a stationary phase which means that a complex mixture will
More informationLab 1 Electrostatics 1
Lab 1 Electrostatics 1 Apparatus: Scotch tape, fake fur, plastic rod, wood dowel, ring stand and clamp, foil rods on string, copper sphere or brass mass on insulating stand, brass mass You have all heard
More informationELECTROSTATICS. the study of electric charges, forces and fields Static Electricity is Stationary Electricity or Accumulation of charge
Electrostatics 1 ELECTROSTATICS the study of electric charges, forces and fields Static Electricity is Stationary Electricity or Accumulation of charge Fundamental Rule Opposites attract, Likes Repel Things
More informationACTIVITY 3: Magnetic and Static Electric Interactions and Energy
UNIT PEF Developing Ideas ACTIVITY 3: Magnetic and Static Electric Interactions and Energy Purpose In the first module of this course (or in the previous activity) you examined magnetic and static electric
More informationSOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES
30 SOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES * Gas molecules are small compared to the space between them. * Gas molecules move in straight lines
More informationEXTENSION 6. Chapter 3 Encounters with Electricity: Electrical Energy in the Home Unit 3.2 Electric Circuits and Electric Charge
EXTENSION 6 Chapter 3 Encounters with Electricity: Electrical Energy in the Home Unit 3.2 Electric Circuits and Electric Charge A view of the Atom and Electric Charge Figure 1 The size of the nucleus is
More informationLab 1 ELECTROSTATICS
5 Name Date Partners Lab 1 ELECTROSTATICS OBJECTIVES To understand the difference between conducting and insulating materials. To observe the effects of charge polarization in conductors and insulators
More informationLiquid X Lab. Number of Drops Before Spilling Trial 1 Trial 2 Trial 3. Write a conclusion: How do your results for Liquid X compare to water?
Names Block Date BIG QUESTION: Liquid X Lab Station 1 Surface Tension, Cohesion, and Adhesion Water is cohesive, adhesive, and has surface tension. Does Liquid X have the same properties? 1. Use a pipette
More informationThe Properties of Water
The Properties of Water Water has many unique properties that allow it to support life on earth. Water is so important to life that scientists look for water on other planets to determine if that planet
More informationSOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES
30 SOLIDS AND LIQUIDS - Here's a brief review of the atomic picture or gases, liquids, and solids GASES * Gas molecules are small compared to the space between them. * Gas molecules move in straight lines
More informationC1a The particulate nature of matter
C1a The particulate nature of matter Introduction This topic may go back over ideas that students have already met, so it does not need to take up much teaching time. Nevertheless, it is important for
More informationUnit 3 Lesson 1 Electric Charge and Static Electricity. Copyright Houghton Mifflin Harcourt Publishing Company
Opposites Attract What is electric charge? Electric charge is a property that leads to electromagnetic interactions between the particles that make up matter. An object can have a positive (+) charge,
More informationNORTHERN ILLINOIS UNIVERSITY PHYSICS DEPARTMENT. Physics 211 E&M and Quantum Physics Spring Lab #2: Electrostatics. qq k r
NORTHRN ILLINOIS UNIVRSITY PHYSICS DPARTMNT Physics 11 &M and Quantum Physics Spring 018 Lab #: lectrostatics Lab Writeup Due: Mon/Wed/Thu/Fri, Jan. 9/31/Jan. 1/, 018 Background You ve learned a lot about
More informationMahopac Central School District Curriculum Introduction to Science 8
Introduction to Science 8 A. The goal of science is to understand the natural world 1. As you make new observations and test new explanations your view of the natural world may change again and again 2.
More informationCreative Classroom Lessons
Matter, Matter Everywhere! Solids, Liquids and Gases Unit Creative Classroom Lessons Contents: 1. Solids, Liquids and gases student folder cover 2. Introduction Activity: Mystery Box 3. Solids, Liquids
More informationChemistry A: States of Matter Packet Name: Hour: Page!1. Chemistry A States of Matter Packet
Chemistry A: States of Matter Packet Name: Hour: Page!1 Chemistry A States of Matter Packet Chemistry A: States of Matter Packet Name: Hour: Page!2 Worksheet #1: States of Matter In this packet we will
More informationElectrostatics x C.
Electrostatics Name Section Theory The study of charges at rest is called electrostatics. You are no doubt aware that objects can acquire excess amounts of charge by contact. What happens when you walk
More informationLiquid X Lab. Station 1 The Penny Lab Water is cohesive, adhesive, and has surface tension. Does Liquid X have the same properties?
Names Block Date Liquid X Lab Station 1 The Penny Lab Water is cohesive, adhesive, and has surface tension. Does Liquid X have the same properties? 1. Use a pipette to carefully place drops of each liquid
More informationElectricity in Progress
Electricity in Progress GRADE LEVELS: Grades 4th - 8th CONCEPT: Explore the history of electricity through two 15 minutes shows, a 30 minute hands on exploration and a 30 experience in the Progress exhibition
More information