1. Which of the following symbols is not correctly associated with its element?
   1. Beryllium ; Be
   2. Nitrogen ; Ni
   3. Oxygen ; O
   4. Aluminum ; Al
   5. Sodium ; Na

2. Which of the following is the correct decimal power that corresponds to the prefix µ?
   1. 10^-2
   2. 10^-6
   3. 10^-3
   4. 10^-9
   5. 10³

3. A student researcher measured the area of her dorm room, finding it to be 4.6 m x 3.2 m. Express the area using the proper number of significant figures:
   1. 14 m²
   2. 14.7 m²
   3. 14.72 m²
   4. 14.720 m²
   5. 15 m²

4. Water boils at what temperature?
   1. 0.0 K
   2. 100 K
   3. 273 K
   4. 373 K
   5. 500 K

5. Which of the following properties about bromine is a chemical property?
   1. The density of Br is 3.12 g/cm³ at 293 K
   2. Br is a brown liquid that boils at 332 K
   3. Br reacts rapidly with metals
   4. Br is a reddish/brown liquid
   5. The freezing point of Br is -7.2^oC

6. If a measurement was precise, but not accurate, it was:
   1. Repeatable, but not close to the true value
   2. Close to the true value, but not repeatable
   3. Repeatable, and close to the true value
   4. Not repeatable, and not close to the true value
   5. None of the above

7. Diamond, made from elemental carbon, has a density of 3500 kg/m³. What is the density expressed in units of g/cm³?
   1. 0.0035 g/cm³
   2. 3.5 g/cm³
   3. 35 g/cm³
   4. 350 g/cm³
   5. 3,500,000 g/cm³

8. A scientific theory
   1. is a natural law.
   2. is an initial explanation of observations.
   3. can always be proven to be correct.
   4. is a hypothesis that repeatedly withstands the test of experiments and has overwhelming supportive evidence.
   5. a verbal statement or mathematical expression summarizing observations.

9. Which of the following is not an SI base unit?
   1. kilogram
   2. meter
   3. mole
   4. degree celsius
   5. second

10. Which of the following is not a correct prefix and corresponding multiple?
    1. kilo, 10³
    2. deci, 10^-1
    3. milli, 10^-3
    4. nano, 10^-6
    5. centi, 10^-2

11. The density of lead is 11.4 g/cm³ at 25^oC. What is the volume of 25.0 g of lead?
    1. 2.19 cm³
    2. 0.456 cm³
    3. 2.85 cm³
    4. 1.24 cm³
    5. 6.05 cm³

12. The volume of H₂ gas in the Hindenburg was 2.60 x 10⁵ cubic meters. What is this volume expressed in cubic kilometers?
    1. 2.60 x 10²
    2. 2.60 x 10^-4
    3. 2.60 x 10⁸
    4. 2.60 x 10¹⁴
    5. 2.60 x 10^-1

13. The following mathematical operation should be correctly displayed as:
    15.060 x 1.62 =
    1. 24.4
    2. 24.40
    3. 24.397
    4. 24.3972
    5. 24.39720

14. 47.0^oC is _____ ^oF.
    1. 85.3
    2. 58.1
    3. 26.6
    4. 79.4
    5. 117

15. Which of the following is an extensive property?
    1. density
    2. temperature
    3. melting point
    4. heat
    5. boiling point

16. The name for the element with chemical symbol S is
    1. silicon
    2. silver
    3. sodium
    4. sulfur
    5. selenium

17. How many centimeters are there in 1.50 x 10^-2 kilometers?
    1. 1.50 x 10²
    2. 1.50 x 10⁴
    3. 1.50 x 10^-1
    4. 1.50 x 10^-3
    5. 1.50 x 10³

18. Diamonds are measured in carats, and 1 carat = 0.200 g. The density of diamond is 3.51 g/cm³. What is the volume of a 3.0 carat diamond?
    1. 0.285 cm³
    2. 1.71 x 10^-1 cm³
    3. 5.85 cm³
    4. 5.85 x 10^-2 cm³
    5. 2.11 cm³

19. One of the lines in a hydrogen line spectrum is a violet line that has a wavelength of 410 nm. What is the wavelength of this light in meters?
    1. 4.1 x 10^-7 m
    2. 4.1 x 10¹¹ m
    3. 4.1 x 10^-9 m
    4. 4.1 x 10² m
    5. 4.1 x 10⁷ m

20. When water boils it produces steam, which is just water in the gaseous form. In symbols, this change can be represented as H₂O(l) --> H₂O(g). If astronauts in space wanted to produce oxygen gas, O₂, from the water, they would need to:
    1. add salt to the water.
    2. use a physical separation technique.
    3. boil a lot of water.
    4. run a chemical reaction.
    5. boil the water at zero gravity.

21. Given that 1 inch = 2.54 cm, what is the length of a football field (100.0 yards) in kilometers?
    1. 91.44 km
    2. 9.144 x 10^-1 km
    3. 914.4 km
    4. 9.144 x 10^-2 km
    5. 9.144 x 10^-4 km

22. The Voyager 1 flyby of Saturn revealed that the surface temperature of the moon Titan is 93 K. What is the surface temperature in degrees Fahrenheit?
    1. -180^oF
    2. -292^oF
    3. 6^oF
    4. -32^oF
    5. 14^oF

23. A European recipe calls for the use of 1.50 kg of milk. An American who wants to follow the recipe has no balance and only volume-measuring containers marked in quarts (1 quart = 0.9463 L). Assuming the density of milk is 1.03 g/mL, what volume of milk in quarts is needed?
    1. 0.631 qt
    2. 15.4 qt
    3. 1.38 qt
    4. 1.63 qt
    5. 1.54 qt

24. Which of the following statements does NOT describe the property of a pure substance?
    1. contains the same ratio of elements always
    2. may have different properties depending on the source
    3. has a definite melting point
    4. has a definite boiling point
    5. cannot be separated by physical means

25. Convert 150^oF to K.
    1. 300 K
    2. 66 K
    3. 580 K
    4. 340 K
    5. none of the above

26. The density of nickel is 8.90 g/cm³. Expressed in units of ng/nm³, the density is:
    1. 8.90 x 10^-24 ng/nm³
    2. 8.90 x 10^-18 ng/nm³
    3. 8.90 x 10^-12 ng/nm³
    4. 8.90 ng/nm³
    5. 890 ng/nm³

27. The correct answer (with respect to arithmetic and significant figures) to the problem:
    12.03 - (45.0375/7.501) + (4.667 x 3.76)

    is:

    1. 23.527
    2. 23.53
    3. 23.5
    4. 24
    5. none of the above

28. The term used to describe how consistently several measurements of some quantity give the same result is:
    1. exactness.
    2. accuracy.
    3. uncertainty.
    4. precision.
    5. significance.

29. If you have a sample of aluminum (density = 2.70 g/cm³) and a sample of iron (density = 7.87 g/cm³) at the same temperature and the samples have equal masses, then the following inference can be made about the relative volumes of these two samples.
    1. Volume of the metal samples cannot be compared due to lack of information.
    2. The volume of the iron sample is greater than the volume of the aluminum sample.
    3. The volume of the aluminum sample is greater than the iron sample.
    4. The volumes of the metal samples are equal.
    5. The question cannot be answered because Al is a gas and Fe is a metal and gases and metals cannot be compared in this way.

30. The sum of the following numbers,
    43.92 g + 147.6 g + 1.387 g + 561 g

    with correct number of significant figures, is:

    1. 753.907 g
    2. 753.91 g
    3. 753.9 g
    4. 754 g
    5. 750 g

31. Isopropyl alcohol, or rubbing alcohol, has a density of 0.786 g/cm³. Calculate the mass of rubbing alcohol in a quart bottle.
    1. 1286 g
    2. 786 g
    3. 744 g
    4. 76 g
    5. 74 g

32. The density of iron is 7.86 g/cm³. Expressed in units of µg/µm³ the density is:
    1. 7.8 x 10¹² µg/µm³
    2. 7.86 x 10⁶ µg/µm³
    3. 7.86 µg/µm³
    4. 7.86 x 10^-6 µg/µm³
    5. 7.86 x 10^-12 µg/µm³

33. Convert the average speed of H₂ molecules at 25^oC (1.70 x 10³ m/s) to miles/hr keeping track of significant figures. [1 mi = 1.6093 km]
    1. 1.05 mi/hr
    2. 1.70 mi/hr
    3. 63.0 mi/hr
    4. 3.80 x 103 mi/hr
    5. 6.120 x 103 mi/hr

34. A 125-mL sample of ethanol (density = 0.78 g/mL) at 298.1 K was heated for 5 min, 30 sec so as to give a constant temperature increase of 3.0^oC/min. What is the final temperature of the ethanol in ^oF?
    1. 108^oF
    2. 63^oF
    3. 42^oF
    4. 31^oF
    5. -2^oF

35. An 8.47 g sample of a solid is placed in a 25.00 mL flask and benzene (C₆H₆), with a density of 0.879 g/mL, is added to fill the flask completely. The C₆H₆ and solid (minus the weight of the flask) have a mass of 24.54 g. Assuming that the solid is insoluble in C₆H₆, the density of the solid is:
    1. 0.794 g/mL.
    2. 0.879 g/mL.
    3. 1.14 g/mL.
    4. 1.26 g/mL.
    5. none of the above

36. Which of the following is the numerically correct answer to the problem below and is quoted to the correct number of significant figures:

    (12.37 - 11.07)3 (16.58)
    -------------------------
     3.5575 + 3.520
    

    1. 5
    2. 5.2
    3. 5.15
    4. 5.147
    5. 5.1468

37. On September 1, 1999, Pioneer 10 (launched on March 2, 1972) was distant enough from Earth that the round-trip for light from Earth to reach it and be returned to Earth required 20 hours, 21 minutes. The distance of Pioneer 10 from Earth on September 1, 1999 was numerically (in AU, where 1 AU = 1.50 x 10⁸ km):
    1. 16.9
    2. 33.8
    3. 73.3
    4. 147
    5. none of the above

38. The nighttime temperature on the Moon is 120 K. This temperature (in ^oF) is:
    1. -333
    2. -244
    3. -218
    4. +274
    5. none of the above

39. A 14.22 g sample of a solid is placed in a flask that holds 1.00 x 10² mL. The flask is filled with cyclohexane, in which the solid is insoluble. The solid and cyclohexane together weigh 82.58 g. The density of the cyclohexane is 0.778 g/mL. What is the density of the solid?
    1. 0.17 g/mL
    2. 1.85 g/mL
    3. 1.00 g/mL
    4. 1.17 g/mL
    5. 1.29 g/mL

40. The person credited with invention of the Periodic Table is:
    1. A.E. Becquerel.
    2. J. Chadwick.
    3. D.I. Mendeleyev.
    4. W.C. Rontgen.
    5. E. Rutherford.

41. Methyl alcohol, CH₃OH, freezes at 179.3 K. At what temperature (in ^oF) does it freeze?
    1. -201.0
    2. -137.0
    3. 290.7
    4. 354.6
    5. none of these

42. Given that the lunar diameter is 3476 km and its mass is 7.353 x 10²² kg, its density (in lbs/ft³) is numerically closest to:
    1. 3.34
    2. 208
    3. 2240
    4. 3.34 x 10⁴
    5. none of these

43. The density of Earth is 5.5 g/cm³ and its radius averages 6.4 x 10⁶ meters. Given that the volume of a sphere of radius, r, is (4/3 r³), what is the mass of planet Earth?
    1. 1.7 x 10¹⁷ g
    2. 6.0 x 10²⁷ g
    3. 6.0 x 10²³ g
    4. 1.5 x 10⁹ g
    5. 1.6 x 10^-28 g

44. The lowest temperature that can be achieved by adding salt to ice is -21.2^oC. What is the equivalent temperature on the Fahrenheit scale?
    1. -40^oF
    2. +11.4^oF
    3. -11.4^oF
    4. -6.2^oF
    5. +7.19^oF

45. What is the density of corn oil in grams per cubic centimeter (g/cm³), if 1 liter of this oil has a mass of 0.91 kg?
    1. 0.91 g/cm³
    2. 9.10 x 10^-4 g/cm³
    3. 9.10 x 10² g/cm³
    4. 0.91 x 10^-3 g/cm³
    5. 9.10 x 10³ g/cm³

46. An irregularly shaped piece of metal has a mass of 54.6 g and displaces 2.83 cm³ of water when dropped into a graduated cylinder filled with water. What is the density of the metal?
    1. 155 g/cm³
    2. 19.3 g/cm³
    3. 5.18 g/cm³
    4. 5.18 x 10^-2 g/cm³
    5. none of these

47. Which of the following is an intensive property?
    1. mass
    2. temperature
    3. volume of a liquid
    4. heat content
    5. length

Answers

1. B
2. B
3. E
4. D
5. C
6. A
7. B
8. D
9. D
10. D
11. A
12. B
13. A
14. E
15. D
16. D
17. E
18. B
19. A
20. D
21. D
22. B
23. E
24. B
25. D
26. C
27. C
28. D
29. C
30. D
31. C
32. D
33. D
34. A
35. D
36. C
37. D
38. B
39. D
40. C
41. B
42. B
43. B
44. D
45. A
46. B
47. B