1 Chapter 1 Chemistry in Our Lives 1.1 Chemistry and Chemicals Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings

2 Definition of Chemistry Chemistry is the study of substances in terms of Composition What is it made of? StructureHow is it put together? PropertiesWhat characteristics does it have? ReactionsHow does it behave with other substances?

3 Chemistry Chemistry happens when A car is started Tarnish is removed from silver Fertilizer is added to help plants grow Food is digested Electricity is produced from burning natural gas Rust is formed on iron nails Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings

4 Chemistry In Our Lives Many products in our lives involve chemistry. Glass Metal alloys Chemically treated water Plastics and polymers Baking soda Foods grown with fertilizers and pesticides Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings

5 Chemicals Chemicals are substances produced by a chemical process. Soaps Toothpaste Polishes Salt Hairspray Vitamins Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings

6 Chemicals in Toothpaste Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings

7 Learning Check Which of the following items contain chemicals? A. Fertilizers B. Vitamins C. Happiness D. Iron nails E. Paints

8 Solution Which of the following items contain chemicals? A. Fertilizerscontain chemicals B. Vitamins contain chemicals C. Happinessdoes not contain chemicals D. Iron nailscontain chemicals E. Paintscontain chemicals