The study of the composition, structure, and properties of matter and the changes it undergoes

Analytical Chemistry• Study that focuses on the composition of

matter Physical Chemistry

• Study that focuses on the changes in matter – the rate of change, energy transfer

Organic Chemistry• Study of all chemicals containing carbon

Mainly organisms Inorganic Chemistry

• Study of chemicals that do not contain carbon Mainly nonliving objects

Biochemistry• Study of the processes that take place in

organisms Muscle contraction, digestion

An organized set of investigation procedures

1. State the problem• The “how” or “why”

2. Gather information3. Form a hypothesis

• A possible explanation for a problem using what you know and what you observe

• A suggested explanation for an observation

4. Test the hypothesis by performing an experiment

5. Analyze data• Record observations• Organize data into tables and graphs

6. Draw conclusions• If your data supports the hypothesis, your

hypothesis was correct.• If your data does not support the

hypothesis, your hypothesis was not correct. Change your hypothesis and begin again.

Tests the effect of one by using controlled conditions

Uses variables or a quantity that can have more than a single value

Independent: the variable you can change or manipulate to see how it affects the dependent variable

Dependent: the variable that changes because of the independent variable

Constant: a factor that does not change when other variables change

Control: standard by which the test results can be compared