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1. What is an experiment?

a) | An observation of natural phenomena, carried out in a controlled manner, so that the results are reproducible, and rational conclusions can be obtained |

b) | Use of the senses, or extensions thereof, to acquire information about natural phenomena |

c) | The general process acquiring and refining information about natural phenomena. It was represented in class by a flow chart. |

d) | A tentative explanation of natural phenomena |

e) | A tested explanation of natural phenomena |

a) | A tested explanation of natural phenomena |

b) | A tentative explanation of natural phenomena |

c) | A concise statement or mathematical equation about natural phenomena |

d) | Use of the senses, or extensions thereof, to acquire information about natural phenomena |

e) | An observation of natural phenomena, carried out in a controlled manner, so that the results are reproducible and rational conclusions can be obtained |

a) | An observation of natural phenomena, carried out in a controlled manner so that the results are reproducible and rational conclusions can be obtained |

b) | Use of the senses, or extensions thereof, to acquire information about natural phenomena |

c) | A tentative explanation of natural phenomena |

d) | A tested explanation of natural phenomena |

e) | A concise statement, or mathematical equation, about natural phenomena |

a) experiment | b) observation | c) hypothesis |

d) theory | e) scientific method |

a) experiment | b) observation | c) hypothesis |

d) theory | e) scientific method |

a) law | b) experiment | c) hypothesis | |

d) observation | e) theory |

a) hypothesis | b) law | c) theory |

d) all of these | e) none of these |

a) True | b) False |

a) True | b) False |

a) True | b) False |

a) | adding 1 (in a special form) to the original quantity |

b) | adding 0 (in a special form) to the original quantity |

c) | multiplying 1 (in a special form) by the original quantity |

d) | multiplying 0 (in a special form) by the original quantity |

a) True | b) False |

a) True | b) False |

a) 0 | b) 1 | c) 2 | d) 3 | e) 4 |

a) 0.0017 x 10^{0} | b) 0.017 x 10^{-1} | c) 0.17 x 10^{-2} |

d) 1.7 x 10^{-3} | e) 17 x 10^{-4} |

a) 0.001375 | b) 0.01375 | c) 137.5 |

d) 1375 | e) 13750 |

a) 175.8 x 10^{0} | b) 1.758 x 10^{-1} | c) 1.758 x 10^{-5} |

d) 1.758 x 10^{0} | e) 1758 x 10^{-4} |

a) | Different units of measurement are always related by powers of 10 |

b) | Different units of measurement are related by various different factors with no predictable pattern |

a) 0.002117 m | b) 0.2540 m | c) 0.3048 m |

d) 3.281 m | e) 472.4 m |

a) 1.51 in^{3} | b) 9.76 in^{3} | c) 63.0 in^{3} |

d) 160 in^{3} | e) 406 in^{3} |

a) 2 | b) 3 | c) 4 | d) indeterminate | e) infinite |

a) 4 | b) 5 | c) 6 | d) indeterminate | e) infinite |

a) 2 | b) 3 | c) 4 | d) indeterminate | e) infinite |

a) 1 | b) 2 | c) 3 | d) 4 | e) infinite |

a) 0 | b) 3 | c) 4 | d) indeterminate | e) infinite |

a) 0 | b) 1 | c) 2 | d) indeterminate | e) infinite |

a) 2 | b) 4 | c) 6 | d) indeterminate | e) infinite |

a) True | b) False |

a) exact | b) indeterminate |

a) none b) one c) two

d) whatever number of uncertain digits the person writing the value wants to show

e) an infinite number

31. Density is calculated by dividing the mass of a substance by its volume. That is, d = m / V. If a 5.00 mL sample of an unknown liguid has a mass of 5.100 g, what is the density of the liquid? Select the answer that complies with the appropriate significant figure rules.

a) 1 g / mL | b) 1.0 g / mL | c) 1.02 g / mL |

d) 1.020 g / mL | e) 1.0200 g / mL |

a) 15 m | b) 15.3 m | c) 15.31 m |

d) 15.310 m | e) 15.3100 m |

a) 8 x 10^{1} m^{2} | b) 79 m^{2} | c) 78.8 m^{2} |

d) 78.80 m^{2} | e) 78.798 m^{2} |

a) 131 g | b) 131.0 g | c) 131.01 g |

d) 131.006 g | e) 131.0065 g |

a) 5 x 10^{1} mL | b) 48 mL | c) 48.1 mL |

d) 48.10 mL | e) 48.100 mL |

a) 6 g / mL | b) 6.0 g / mL | c) 6.00 g / mL |

d) 6.000 g / mL | e) 6.0000 g / mL |

For simplicity, units have been omitted from the numbers, but assume all numbers come from measurements. With regard to significant figure rules, how should the answer to this calculation be expressed?

a) 4 | b) 4.4 | c) 4.44 |

d) 4.439 | e) 4.4390 |

For simplicity, units have been omitted from the numbers, but assume all numbers come from measurements. With regard to significant figure rules, how should the answer to this calculation be expressed?

a) 4 | b) 4.0 | c) 4.05 |

d) 4.050 | e) 4.0499 |

a) 1 | b) 2 | c) 3 | d) 5 | e) 6 |

a) addition | b) division | c) multiplication |

ANSWERS:

1 a 2 c 3 d 4 e 5 b

6 c 7 d 8 b 9 a 10 b

11 c 12 a 13 b 14 b 15 d

16 c 17 b 18 a 19 c 20 a

21 c 22 c 23 a 24 d 25 e

26 e 27 c 28 b 29 a 30 b

31 c 32 c 33 b 34 c 35 c

36 a 37 d 38 b 39 b 40 a