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Self Assessment A
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1

Which of the following is an example of a physical property?
A)combustibility
B)corrosiveness
C)explosiveness
D)density
E)A and D
2

Which of the following represents the greatest mass?
A)2.0 x 103 mg
B)10.0 dg
C)0.0010 kg
D)1.0 x 106 μg
E)3.0 x 1012 pg
3

Convert 240 K and 468 K to the Celcius scale.
A)513 oC and 741 oC
B)-59 oC and 351 oC
C)-18.3 oC and 108 oC
D)-33 oC and 195 oC
4

Calculate the volume occupied by 4.50 X 102 g of gold (density = 19.3 g/cm3).
A)23.3 cm3
B)8.69 x 103 cm
C)19.3 cm3
D)450 cm3
5

The melting point of bromine is -7 oC. What is this melting point expressed in oF?
A)45 oF
B)-28 oF
C)-13 oF
D)19 oF
E)None of these is within 3 oF of the correct answer.
6

How many significant figures are there in the measurement 3.4080 g?
A)6
B)5
C)4
D)3
E)2
7

How many significant figures should you report as the sum of 8.3801 + 2.57?
A)3
B)5
C)7
D)6
E)4
8

Walking fast can consume 5.0 kcal per minute. How many hours of exercise are required to consume 450 kcal, the energy in a large candy bar?
A)7.5 hr
B)1.25 hr
C)1.75 hr
D)1.5 hr
E)1 hr
9

Together, Americans drive about 5.0 x 109 miles per day, and their cars get an average of 22 miles per gallon of gas used. For each kilogram of gasoline used, about 3 kg of carbon dioxide is produced. How many kilograms of CO2 are emitted into the atmosphere by cars in the US each day? [1 gal = 3.5 kg]
A)2 x 109 kg
B)2.4 x 109 kg
C)8.3 x 109 kg
D)1.6 x 109 kg
E)None of the above.
10

A bar of gold is measured with the ruler shown. The length of the bar should be reported as:
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17469/ch1quizaq6.gif','popWin', 'width=242,height=133,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>
A)3 cm.
B)3.0 cm.
C)2.7 cm.
D)2 cm.





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