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Chapter 3: Substances, Mixture
Chapter 3: Substances, Mixtures, and Solubility
21
Science
8th Grade
01/30/2007

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Term
neutralize
Definition
the effect an antacid (base) has on stomach acid
Term
does a weaker acid produce more or less hydronium than a strong acid
Definition
less ( weaker=less, stronger = more)
Term
what is the solvent in an aqueous solution?
Definition
Water
Term
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
Definition
D) 18 g solute, 30 g solvent
Term
Which of these is not a property of bases?
A) bitter
B) corrosive
C) slippery
D) sour
Definition
D) sour
Term
What is formed in a neutralization process?
A) H2O
B) H3O+
C) H2O2
D) OH-
Definition
A) H2O
Term
Which number is a pH for a strong base?
A) 1
B) 13
C) 7
D) 8
Definition
B) 13
Term
Which term describes water molecules, based on the distribution of their electrons?
A) neutral
B) saturated
C) polar
D) soluble
Definition
C) polar
Term
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
Definition
nitrogen
Term
A solid solute that comes back out of solution is called a(n) _________ .

A) suspension
B) aqueous
C) solvent
D) precipitate
Definition
A) suspension
Term
__________ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

A) Concentration
B) Polarity
C) Solubility
D) Supersaturation
Definition
C) Solubility
Term
__________ are substances that can accept positively charged H+ ions.

A) Solutes
B) Acids
C) Hydroniums
D) Bases
Definition
D) Bases
Term
A mixture that appears to have the same composition, color, and density and is mixed at the molecular level is called a(n) __________.

A) element
B) suspension
C) solution
D) heterogeneous mixture
Definition
D) heterogeneous mixture
Term
__________ are substances that release positively charged hydrogen ions, H+.

A) Bases
B) Solutes
C) Acids
D) Solvents
Definition
C) Acids
Term
__________ is the interaction that occurs between acids and bases in which the properties of each are canceled out by the other.
A) Indication
B) Balancing
C) Neutralization
D) Dissolution
Definition
C) Neutralization
Term
Matter that has fixed composition is a __________.

A) mixture
B) substance
C) solid
D) solution
Definition
B) substance
Term
A solution having which of the following pH values is the most acidic?

A) 14
B) 7
C) 5
D) 1
Definition
A) 14
Term
A mixture in which the substances are NOT MIXED EVENLY ( NOT THE SAME) is called __________.

A) homogeneous
B) precipitated
C) a solution
D) heterogeneous
Definition
D) heterogeneous
Term
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 sol
Definition
D) Nonpolar solvents are useful for dissolving nonpolar solutes.
Term
A(n) __________ is the substance being dissolved in a solution.


A) substrate
B) solute
C) solvent
D) insolvent
Definition
B) solute
Term
__________ are combinations of substances that can be separated by physical processes.
A) Compounds
B) Mixtures
C) Atoms
D) Elements
Definition
B) Mixtures
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