Define:
1. inference                                14. density
2. classification                           15. slope
3. regularity                                16. matter
4. hypothesis                              17. macroscopic observation
5. theory                                    18. properties
6. model                                    19. chemical change
7. quantity                                  20. melting
8. SI Units                                 21. physical change
9. area                                       22. solid
10. volume                                 23. liquid
11. data                                     24. gas
12. uncertain digit                      25. fluid
13. best-fit line                          26. submicroscopic

Questions:
1. How can the identity of an unknown be determined?
2. What does the study of chemistry furnish you with?
3. List several ways chemistry is commonly used.
4. How long have atomic particles existed?
5. What is the basis for all science?
6. What technique is important for problem solving?
7. How do you make sure your observations are accurate?
8. When do observations become fact?
9. How can chemists use classification?
10. What does the word ‘explain’ mean to science?
11. What is the difference between mathematics and science?
12. Explain “only like quantities can be added or subtracted.”
13. Explain “a number without a unit has no meaning."
14. Why are SI units so popular?
15. Copy Table 1-1 and Table 1-2.
16. What are the two important points of the factor-label method?
17. Why are graphs useful?
18. Why is there uncertainty in measurement?
19. Differentiate between physical and chemical changes.
20. Compare and contrast three different physical states in terms of properties and the particle model.

Problems:
page 15   # 9,10,11,12                    page 23   # 17,18,19,20,21,22,23,24
page 29   #  26,28
Chapter review pages 30-33    # 5,6,8,23,24,25,27,28,32,34,35,36,37,38,44,54