South Carolina Science Grade 7

Chapter 20: Properties and Changes of Matter

Standardized Test Practice

1.
The volume of a rock is 2.36 cm3 and its mass is 12.9 g. What is the rock's density?
A)0.183 g/cm3
B)1.36 g/cm3
C)5.47 g/cm3
D)3.04 g/cm3
2.
According to the table, what is the volume of 8.96 g of bromine?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078786789/161383/636_616_q2_q3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>

A)0.348 cm3
B)5.84 cm3
C)28.0 cm3
D)2.87 cm3
3.
At which of the following temperatures is bromine a liquid?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078786789/161383/636_616_q2_q3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>

A)12ºC
B)-12ºC
C)62ºC
D)87ºC
4.
Which of the following changes occurs during sublimation?
A)solid to gas
B)gas to liquid
C)gas to solid
D)liquid to gas
5.
During an experiment, you find that you can dissolve 3.6 g of a substance in 300 mL of water at 25ºC. How much of the substance would you predict that you could dissolve in 600 mL of water at the same temperature?
A)1.8 g
B)3.6 g
C)7.2 g
D)5.4 g
6.
Which substance might have a mass of 8.927 g and a volume of 5.646 cm3? [insert 636_STP_Questions_ta02, table of physical properties of substance, p. 615]
A)sucrose
B)benzoic acid
C)methane
D)urea
7.
Which statement is true about the substances? [insert 636_STP_Questions_ta02, table of physical properties of substance, p. 615]
A)Benzoic acid is a solid at 192ºC.
B)Methane is a solid at 175ºC.
C)Sucrose is a liquid at 194ºC.
D)Urea is a liquid at 122ºC.
8.
The normal body temperature is 98.6ºF. What is this temperature on the Celsius scale?
A)72ºC
B)145ºC
C)37ºC
D)209ºC
9.
Which of the following processes is the reverse of vaporization?
A)condensation
B)deposition
C)melting
D)sublimation
10.
Which of these properties changes if the size of an object changes?
A)density
B)melting point
C)solubility
D)mass
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe