New York Science Grade 7

Section 2: Solubility

Section Quizzes - English

1
A(n) __________ is the substance being dissolved in a solution.
A)solute
B)solvent
C)insolvent
D)substrate
2
Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
A)oxygen
B)nitrogen
C)argon
D)none of the above
3
Sterling silver contains 92.5 percent silver and 7.5 percent copper. Which substance is the solute?
A)silver
B)copper
C)platinum
D)Solids do not form solutions.
4
A solid solute that comes back out of solution is called a(n) _________ .
A)solvent
B)precipitate
C)suspension
D)aqueous
5
The process for separating air is called __________ .
A)fractionation
B)homogenization
C)emulsification
D)precipitation
6
A solution in which water is the solvent is called a(n) __________ solution.
A)nonpolar
B)aqueous
C)heterogeneous
D)saturated
7
__________ compounds are formed from atoms covalently bonded.
A)Ionic
B)Elemental
C)Heterogeneous
D)Molecular
8
Which of the following is formed when atoms of different elements exchange electrons?
A)polar solvents
B)nonpolar compounds
C)molecular compounds
D)ionic compounds
9
Which of the following statements is true?
A)Nonpolar solvents are useful for dissolving polar solutes.
B)Polar solvents are useful for dissolving nonpolar solutes.
C)Nonpolar solvents are not useful because they do not form solutions with water.
D)Nonpolar solvents are useful for dissolving nonpolar solutes.
10
A solution that contains all the solute it can hold at a given temperature is __________.
A)unsaturated
B)saturated
C)supersaturated
D)soluble
11
__________ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
A)Supersaturation
B)Concentration
C)Solubility
D)Polarity
12
As the temperature of a liquid solvent increases, the amount of solute that can dissolve in it __________.
A)decreases
B)remains constant
C)decreases by one degree Celsius for every milliliter of solvent
D)increases
13
Stir 500 g of cesium chloride into 200 g of water at 20°C. If 127 g sink to the bottom of the container, what is the solubility of cesium chloride in water at 20°C?
A)186.5
B)373
C)127
D)286.5
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