1. Chapter 1-3 Review

2. How’s it going in chemistry? a) Not well, I wish I had dropped. b) Not well, I need to work harder. c) OK, better than math and worse than P.E. d) It’s fun when we do labs. e) I’m loving it!

3. Will you be ready for the test Monday? a) OMG!!! There’s a test Monday? b) Yes, after I study a bit more. c) Bring it on!

4. Significant figures are: 1) Easy! I know I will get all of the questions on them right on the test tomorrow. 2) O.k…I think I know what I’m doing, but I’m not 100% confident. 3) Huh? I don’t even know what a “sig fig” is….

5. How many sig figs are in 12.35 g? 1) 1 2) 2 3) 3 4) 4

6. How many sig figs are in 20.37 g? 1) 1 2) 2 3) 3 4) 4

7. How many sig figs are in 0.0045 mm? 1) 1 2) 2 3) 3 4) 4 5) 5

8. How many sig figs are in 3.23 x 10 3 km? 1) 1 2) 2 3) 3 4) 4 5) 6

9. How many sig figs are in 3.050 L? 1) 1 2) 2 3) 3 4) 4

10. Round 234.476 to 4 sig figs. 1) 234 2) 234.4 3) 234.5 4) 235

11. Round 987,000,000 to 2 sig figs 1) 980,000,000 2) 990,000,000 3) 1.0 x 10 9 4) 9.8 x 10 8 5) 9.9 x 10 8 6) 98 x 10 6 7) 99 x 10 7

12. 3.76 g + 5.183 g = 8.943 g 1) 8.943 g 2) 8.94 g 3) 8.9 g 4) 9 g

13. 156.7 mL – 13 mL = 143.7 mL 1) 143.7 mL 2) 143 mL 3) 144 mL 4) 140 mL

14. 5.16 cm x 4.3 cm = 22.188 cm 2 1) 22.188 cm 2 2) 22.19 cm 2 3) 22.2 cm 2 4) 22 cm 2 5) 23 cm 2

15. 6.720 g/15.00 mL = 0.448 g/mL 1) 0.44 g/mL 2) 0.45 g/mL 3) 0.448 g/mL 4) 0.4480 g/mL

16. 42.5 m x 25 m = 1062.5 m 2 1) 11 m 2 2) 106 m 2 3) 1060 m 2 4) 1063 m 2 5) 1.06 x 10 3 m 2 6) 1.1 x 10 3 m 2

17. Melting point is a physical and: a) Extensive property b) Intensive property

18. Mass is a physical and: a) Extensive property b) Intensive property

19. Classify as a physical or chemical property: Gold has a density of 19 g/cm 3. a) Physical property b) Chemical property

20. Classify as a physical or chemical property: Sodium ignites when dropped in water. a) Physical property b) Chemical property

21. Classify as a physical or chemical property: Water boils at 100° C. a) Physical property b) Chemical property

22. Classify as a physical or chemical property: Silver tarnishes. a) Physical property b) Chemical property

23. Classify as a physical change or a chemical change: Frying an egg. a) Physical change b) Chemical change

24. Classify as a physical change or a chemical change: Breaking a pencil in two. a) Physical change b) Chemical change

25. Classify as a physical change or a chemical change: Water freezing and forming ice. a) Physical change b) Chemical change

26. Classify as a physical change or a chemical change: Ripening of a banana. a) Physical change b) Chemical change

27. Seawater (salt, sand, and water) is an example of a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

28. Iced tea with ice cubes is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

29. Iced tea without ice cubes is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

30. Sugar (C 12 H 22 O 11 ) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

31. Sulfur (S 8 ) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

32. Other Things to Know for the Exam Scientific Notation Scientific Notation Conversions Conversions Know your prefixes Know your prefixes Attention to Units Attention to Units Density Problem Density Problem Phase Diagrams/Heating Curves Phase Diagrams/Heating Curves

33. Density is a physical and: a) Extensive property b) Intensive property

34. Length is a physical and: a) Extensive property b) Intensive property

35. Classify as a physical or chemical property: Mercury is a liquid at room temperature. a) Physical property b) Chemical property

36. Classify as a physical change or a chemical change: Burning wood. a) Physical change b) Chemical change

37. Water (H 2 O) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound