All Things Are Made of Atoms and Molecules

Is soda pop composed of chemicals Yes. In fact, there is nothing you can hold or touch that is not made of chemicals. When most people think of chemicals, however, they envision a can of paint thiimer in their garage, or they recall a headline about a river polluted by industrial waste. But chemicals compose more than just these things— they compose ordinary things, too. Chemicals compose the air we breathe and the water we drink. They compose toothpaste, Tylenol, and toilet paper. Chemicals make up virtually everything we come into contact with. Chemistry explains the properties and behavior of chemicals, in the broadest sense, by helping us imderstand the molecules that compose them. 

Chemists are interested in why ordinary substances are the way they are. Why is water a liquid at room temperature Why is salt a solid Why does soda fizz Why is a sunset red Throughout tiris book, you will learn the answers to these questions and many others. You will leam the connections between the behavior of matter and the behavior of the particles that compose it 

There is a direct connection between the world of atoms and molecules and the world you and I experience every day. Chemists explore this coimection. They seek to understand it. A good, simple definition of chemistry is the science that tries to understand how matter behaves bp studying how atoms and molecules behave. 

Chemistry—The science that seeks to understand what matter does by studying what atoms and moiecules do. 

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