Introduction To Physical Science

Chapter 8: Substances, Mixtures, and Solubility

Chapter Review Quiz-English

1
The process for separating air is called __________ .
A)emulsification
B)precipitation
C)fractionation
D)homogenization
2
A(n) __________ is made of two or more elements chemically combined in fixed ratios.
A)solution
B)atom
C)mixture
D)compound
3
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)373
B)186.5
C)286.5
D)127
4
A solid solute that comes back out of solution is called a(n) _________.
A)precipitate
B)aqueous
C)suspension
D)solvent
5
Which of the following statements is true?
A)Nonpolar solvents are useful for dissolving polar solutes.
B)Nonpolar solvents are not useful because they do not form solutions with water.
C)Polar solvents are useful for dissolving nonpolar solutes.
D)Nonpolar solvents are useful for dissolving nonpolar solutes.
6
Matter that has fixed composition is a __________.
A)mixture
B)solution
C)solid
D)substance
7
__________ compounds are formed from atoms covalently bonded.
A)Ionic
B)Elemental
C)Molecular
D)Heterogeneous
8
A mixture that appears to have the same composition, color, and density and is mixed at the molecular level is called a(n) __________.
A)solution
B)heterogeneous mixture
C)element
D)suspension
9
Which of the following is a compound?
A)blood
B)air
C)brass
D)water
10
A(n) __________ is the substance being dissolved in a solution.
A)substrate
B)solute
C)solvent
D)insolvent
11
A solution having which of the following pH values is the most acidic?
A)1
B)5
C)7
D)14
12
__________ are substances that release positively charged hydrogen ions, H+.
A)Acids
B)Bases
C)Solutes
D)Solvents
13
Which of the following is formed when atoms of different elements exchange electrons?
A)ionic compounds
B)polar solvents
C)nonpolar compounds
D)molecular compounds
14
__________ are substances that can accept positively charged H+ ions.
A)Acids
B)Solutes
C)Hydroniums
D)Bases
15
Sterling silver contains 92.5 percent silver and 7.5 percent copper. Which substance is the solute?
A)Solids do not form solutions.
B)copper
C)silver
D)platinum
16
__________ is the interaction that occurs between acids and bases in which the properties of each are canceled out by the other.
A)Dissolution
B)Neutralization
C)Balancing
D)Indication
17
A mixture in which the substances are not mixed evenly is called __________.
A)homogeneous
B)a solution
C)heterogeneous
D)precipitated
18
A solution in which water is the solvent is called a(n) __________ solution.
A)heterogeneous
B)nonpolar
C)aqueous
D)saturated
19
A solution that contains all the solute it can hold at a given temperature is __________.
A)soluble
B)unsaturated
C)supersaturated
D)saturated
20
Which of the following is a solution?
A)salt water
B)milk
C)chlorine
D)muddy water
21
As the temperature of a liquid solvent increases, the amount of solute that can dissolve in it __________.
A)decreases by one degree Celsius for every milliliter of solvent
B)remains constant
C)decreases
D)increases
22
__________ are combinations of substances that can be separated by physical processes.
A)Mixtures
B)Compounds
C)Atoms
D)Elements
23
__________ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
A)Concentration
B)Supersaturation
C)Solubility
D)Polarity
24
Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
A)oxygen
B)argon
C)nitrogen
D)none of the above
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