2.  Chemistry is the study of the composition of matter and the changes that matter undergoes  Matter is

3.  The 5 traditional areas of study ◦ Organic chemistry – chemicals containing carbon ◦ Inorganic chemistry – chemicals that do not contain carbon ◦ Biochemistry – processes in organisms ◦ Analytical chemistry – composition of matter ◦ Physical chemistry – mechanism, rate and energy when matter undergoes a change

4.  Pure Chemistry – when a scientist pursues knowledge just to gain the knowledge  Applied Chemistry – when a scientist directs his research toward a goal.

5.  Chemists aid in conserving, producing and storing energy.

6.  Chemistry supplies medicine, material and technology for doctors.

7.  Chemistry plays an important role in agriculture ◦ Jellyfish gene in potatoes

8.  Chemistry identifies pollutants in the air and finds ways to prevent pollution.

9.  Chemistry stems from alchemy ◦ Alchemist searched for a way to turn other metals into gold ◦ They also searched for the elixir of life  Alchemist developed tools and techniques used in chemistry

10.  Antoine-Laurent Lavoisier (sometimes referred to as the father of chemistry) transformed chemistry from an observation to a measurement science.

11. 1. State the problem 2. Collect information 3. Form a hypothesis 4. Test hypothesis 5. Make observations 6. Record and study data 7. Draw a conclusion

12.  Theory vs. Law  Theory – well-tested explanation. A theory can be changed if new information arrises  Law – statement that summarizes the results of many observations. Does not explain the relationship

13.  Parts of an experiment ◦ Manipulated variable – variable you change during experiment (independent variable) ◦ Responding variable – variable that is observed during the experiment (dependent variable)

14. Scientist collaborate and communicate often The more they collaborate the better their outcomes will be.

16.  Title on graph  Appropriate labels on each axis and units