Chapter 1 Chemistry in our Lives 1.1 Chemistry and Chemicals Learning Goal Define the term chemistry and identify substances as chemicals. © 2014 Pearson Education, Inc.

Identifying Place Values (1.4A) Chapter 1 Readiness Key Math Skills Identifying Place Values (1.4A) Using Positive and Negative Numbers in Calculations (1.4B) Calculating a Percentage (1.4C) Solving Equations (1.4D) Interpreting a Line Graph (1.4E) © 2014 Pearson Education, Inc.

Definition of Chemistry Chemistry is the study of substances in terms of: composition What is it made of? structure How is it put together? properties What characteristics does it have? reactions How does it behave with other substances?

Units of Measurement and Their Abbreviations Chemistry happens every day when: food is cooked a car is started silver tarnishes an antacid tablet fizzes in water plants grow taller food is digested

Branches of Chemistry The field of chemistry is divided into branches such as general chemistry organic chemistry biochemistry geochemistry physical chemistry

Chemicals Chemicals are substances that always have the same composition and properties. All things you see are made of chemicals such as soaps and lotions toothpaste cosmetics clothes

Chemicals in Toothpaste

Chemistry in Our Lives Some of the chemicals you may encounter when you cook in the kitchen are antioxidants in food metal alloys plastics

Learning Check Which of the following items contain chemicals? toothpaste vitamins happiness glass food

Solution Which of the following items contain chemicals? toothpaste contain chemicals vitamins contain chemicals happiness does not contain chemicals glass contain chemicals food contain chemicals