Chemistry: Matter and Change

Chapter 7: Ionic Compounds and Metals

Standardized Test Practice

1
Which of these is the electron configuration of an atom most likely to gain an electron?

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A)1s2 2s2 2p6
B)1s2 2s2 2p6 3s1
C)1s2 2s2 2p6 3s2 3p5
D)1s2 2s2 2p6 3s2 3p6 4s1
2
How many electrons are present in the valence level for all noble gases except helium?
A)6
B)7
C)8
D)9
3
What is the electron configuration of the chlorine atom after it gains an electron?
A)1s2 2s2 2p6
B)1s2 2s2 2p6 3s2 3p5
C)1s2 2s2 2p6 3s2 3p6
D)1s2 2s2 2p6 3s2 3p6 4s1
4
How are ionic bonds formed?
A)sharing of electrons between atoms
B)electrostatic forces between ions
C)loss of electrons by atoms
D)gain of electrons by atoms
5
What is the name given to the energy required to separate one mole of the ions of an ionic compound?
A)heat energy
B)kinetic energy
C)potential energy
D)lattice energy
6
The lattice energy of LiF is greater (more negative) than the lattice energy of NaF because __________.

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A)lithium is smaller than sodium
B)sodium is smaller than lithium
C)the charge of lithium ions is greater than the charge of sodium ions
D)the charge of sodium ions is greater than the charge of lithium ions
7
In the diagram above, what force breaks the ionic crystal apart?

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A)gravity
B)the force of the hammer blow
C)electrostatic attraction
D)electrostatic repulsion
8
Sulfate (SO42-) is a ____________.
A)monatomic anion
B)polyatomic anion
C)monatomic cation
D)polyatomic cation
9
What is the formula for ammonium bromide?
A)NH4Br
B)NH3Br
C)(NH4)2Br
D)NH4Br2
10
What is the proper name for the ionic compound shown above?

Cu(NO3)2
A)copper (II) nitrite
B)copper(II) nitrate
C)copper (I) nitrite
D)copper (I) nitrate
11
Which of the following is an oxyanion?
A)CN-
B)NH4+
C)S2-
D)CrO42-
12
Why are metals described as having a "sea of electrons"?
A)The electrons are wet.
B)The electrons move in waves.
C)The electrons are free to move between the atoms in a metal.
D)The electrons are fixed to a particular metal atom.
13
Which of the following is a mixture of elements that has metallic properties?
A)an alloy
B)a suspension
C)a gas
D)a pure metal
14
What two properties of metals are shown in the diagram?

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A)malleability and strength
B)thermal conductivity and durability
C)malleability and ductility
D)electrical conductivity and hardness
15
Hardness and strength are two properties of metals that increase as ________ increases.
A)the number of delocalized electrons
B)atomic mass
C)temperature
D)the distance between cations
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