2. Chapter 1 Introduction to Chemistry Ms. Wang Lawndale High School

3. Matter Anything that has mass and occupies space

4. Chemistry Chemistry affects all aspects of life and most natural events The study of the composition of matter and the changes that matter undergoes There are 5 main areas of study in chemistry

5. study of all chemicals containing carbon Example: Athletes inhale chemicals developed by organic chemists to control symptoms of asthma 1. Organic Chemistry

6. 2. Inorganic Chemistry study of chemicals that generally do not contain carbon Example: Explain how a lack of calcium can affect the growth and repair of bones

7. 3. Biochemistry study of processes that take place in organisms Example: Study how the energy used for the contraction of muscles is produced and stored

8. 4. Analytical Chemistry study that focuses on the composition of matter Example: develop tests to detect chemicals in the blood

9. 5. Physical Chemistry study that deals with the rate of how fast matter undergoes a change Example: study factors that affect breathing rates during exercise

10. Why Study Chemistry? Chemistry can be useful in explaining the natural world and preparing people for career opportunities

11. Why Study Chemistry? Chemistry supplies the medicines, materials, and technology that doctors use to treat their patients

12. Why Study Chemistry? Chemists play an essential role in finding ways to conserve, produce, and store energy

13. Why Study Chemistry? Chemists help to develop more effective ways to protect crops

14. Why Study Chemistry? Chemists help to identify pollutants and prevent pollution

15. The Scientific Method A logical, systematic approach to the solution of a scientific problem

16. Step 1 – Make Observations an observation usually leads to a problem or question

17. Step 2 – Formulate A Hypothesis propose an explanation for your observation

18. Step 3 - Experiment a procedure used to test a hypothesis

19. Step 4 - Analyze Record the results of the experiment

20. Step 5 - Conclusion Compare the hypothesis to the experiment’s conclusion

21. HOMEWORK Page 34 #’s 53, 54, 59-62, 67, 71