Chapter 2 Study Guide
Section 2.1
1. Time Second s
2. Mass Kilogram kg
3. Temperature Kelvin K
4. Length Meter m
5. B
6. D
7. A
8. C
9. The correct order is: giga-, mega-, kilo-, centi-, milli-, nano-, pico-
10. A) c; 1/100 B) k; 1000 C) m; 1/1000
11. Celsius; no, the SI unit for temperature is the Kelvin
12. 1000g
13. 1 000 000 liters
14. 100 cm
15. Base units are defined units based on specific objects or events in the physical world. Derived units are defined by combining base units.
16. Density is a ratio that compares the mass of an object to its volume.
17. Canned goods are more dense than paper goods. They have more mass per unit volume. For the same volume, the canned goods have more mass than the paper goods. The greater mass is more difficult to lift.
18. Volume is equal to its mass divided by its density.
19. Analyze, solve, and evaluate
20. Add 273 degrees Celsius
Section 2.2
1.
1.61 x 102
1.62762 x 10-27
2.8 x 10-8
9.10939 x 10-31
2.
a) 5 x 106
b) 8.394 x 109
c) 4.21 x 10-4
d) 3 x 10-2
3. A conversion factor is a ratio of equivalent values used to express the same quantity in different units
4. A method of problem solving that often uses conversion factors
5. kg, g, kg,g
6. m, cm, m, cm
7. L, kL, L, kL
8. cm, m, cm, m
9. km/h, m, km, h, min, min, s, m/s
Section 2.3
1. a. nothing b. precise c. precise and accurate
2. a
3. c
4. d
5. b
6. c
7. significant figures
8. estimated
9. non-zero
10. zeros
11. placeholders
12. counting numbers
13. scientific notation
14. a. 12.56 b. 1.001 c. 100.0 d. 23.34
15. a. 13 b. 12.783 c. 12.7835 d. 12.78346
16. a. 121 b. 120.8 c. 120.75 d. 120.7524
17. a. 115.6 b. 4.25 c. 2 d. 1.90
Section 2.4
1. circle graph
2. bar graph
3. 60%
4. August; November
5. 7
6. 3
7. 1
8. 5
9. 2
10. 6
11. 4
Sig Fig Calculations
1) 533 grams
2) 31 g/mL
3) 62 J/s
4) -0.11 m
5) 500 cm
6) 3.9 m/s
7) 332.12 kg
8) 2600 m