Glencoe Science Level Green

Chapter 21: Substances, Mixtures, and Solubility

Standardized Test Practice

1

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078600472/161383/643_245_q1_q2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (28.0K)</a>

What is the solubility of potassium chloride in grams per 100 g of water at 60° C?
A)40
B)45
C)55
D)50
2

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078600472/161383/643_245_q1_q2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (28.0K)</a>

At which temperature is the solubility of potassium chloride the same as the solubility of sodium chloride?
A)5° C
B)20° C
C)45° C
D)100° C
3
How does an antacid affect your stomach acid?
A)dilutes it
B)neutralizes it
C)inreases its acidity
D)lowers its concentration
4
Given equal concentrations, which of the following produces the fewest hydronium ions in an aqueous solution?
A)strong acid
B)weak acid
C)strong base
D)weak base
5
Which of the following is true about all aqueous solutions?
A)All are extremely concentrated.
B)They have more than three solutes.
C)Water is the solvent in all of them.
D)All have a gas as a solute.
6
Which solution has the greatest concentration?
A)12 g solute, 27 g solvent
B)15 g solute, 41 g solvent
C)9 g solute, 18 g solvent
D)18 g solute, 30 g solvent
7
Which of these is not a property of bases?
A)bitter
B)corrosive
C)slippery
D)sour
8
What is formed in a neutralization process?
A)H2O
B)H3O+
C)H2O2
D)OH-
9
Which number is a pH for a strong base?
A)1
B)13
C)7
D)8
10

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078600472/161383/643_649_q10.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (9.0K)</a>

Which term describes water molecules, like the one in the figure, based on the distribution of their electrons?
A)neutral
B)saturated
C)polar
D)soluble
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe