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Multiple Choice
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1

A hypothesis:

i. must be testable.

ii. is a theory that has been supported by experiments.

iii. is a tentative guess that explains an observation.

iv. is used to make predictions.

v. is a set of conceptual assumptions

A)i and ii
B)only ii
C)i and iii
D)iii and iv
E)iv and v
2

The SI units tera and milli represent, respectively:
A)106 and 10-3
B)1012 and 103
C)10-3 and 1012
D)108 and 103
E)1012 and 10-3
3

Which of these is NOT an SI unit?
A)mole
B)liter
C)kelvin
D)second
E)ampere
4

9.50 x 10-1 kg converted to the basic unit (with no prefix) and expressed in standard exponential notation to the proper number of significant digits is:
A)0.95 kg
B)9.50 x 102 g
C)950 g
D)9.5 x 105 mg
E)9.5 x 102 g
5

How many significant figures does the sum of the following contain? 8.3801 + 2.57
A)5
B)7
C)3
D)6
E)4
6

If a measurement is not very reproducible but close to the actual value it is very _______ but not very ________ .
A)accurate, precise
B)precise, accurate
C)random, systematic
D)calibrated, precise
E)systematic, precise
7

Calculate the volume of 450 g of gold (density = 19.3 g/cm3)
A)23.3 cm3
B)8685 cm3
C)19.3 cm3
D)45.0 cm3
8

Convert 1.47 L to cubic centimeters.
A)1.47 cm3
B)490 cm3
C)1.47 x 103 cm3
D)1.47 x 104 cm3
E)14.7 cm3
9

How many significant figures are there in 5.0390 g?
A)4
B)5
C)6
D)2
E)3
10

A small pizza has a diameter of 7.50 inches. Its diameter in centimeters is:
A)19.1 cm
B)12.0 cm
C)4.65 cm
D)2.95 cm
E)0.169 cm





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