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Cover design David Keller Opening page illustrations David Keller Text illustrations Janet Moneymaker, Rebecca W. Keller, PhD Copyright 2013 Gravitas Publications, Inc. All rights reserved. No part o

CONTENTS iii CHAPTER 1 ATOMS 1.1 1.2 1.3 1.4 1.5 Atoms Different Atoms Atoms Stick Together Making Observations Summary 2 5 6 7 8 10 10 14 16 1 CHAPTER 2 MOLECULES 2.1 2.2 2.3 2.4 3.1 3.2 3.3 3.4

iv CONTENTS CHAPTER 6 MIXTURES 6.1 6.2 6.3 6.4 6.5 6.6 7.1 7.2 7.3 7.4 7.5 7.6 Mixing Mixtures Some Mixtures Dissolve Dissolving Soap Summary Unmixing Evaporation Sorting By Hand Using Tools Using T

2 Focus On Elementary Chemistry 1.1 Atoms Have you ever wondered if the Moon is really made of green cheese Have you ever thought the clouds might be made of cotton candy

Chapter 1 Atoms 3 Have you ever wanted to know what makes carrots orange... or peas green Have you ever wondered why brussels sprouts couldnt taste more like sweet cherries, or asparagus taste more

4 Focus On Elementary Chemistry Atoms are very small things we cant see with only our eyes. The Moon is not really made of green cheese. It is made of atoms that are found in rocks and dirt. Clouds

Chapter 1 Atoms 5 Carrots are orange because their atoms are arranged in a way that makes them orange. Peas are green because their atoms are arranged in a way that makes them green. Brussels sprout

6 Focus On Elementary Chemistry 1.3 Atoms Stick Together Atoms can be by themselves, or they can hook to other atoms to make molecules. We will learn more about molecules in Chapter 2. Atoms can sti

Chapter 1 Atoms 7 1.4 Making Observations How do we know everything is made of atoms if we cant see them with our eyes We know about atoms because of the way things look and the way things behave. T

8 Focus On Elementary Chemistry Does it crawl in a straight line, or does it wander All of these questions, and many others, can be answered by making careful observations. Observations are a very i