1.
|
Which of the following is a difference between metals and nonmetals?
| |
A)
|
Metals contain electrons, nonmetals do not.
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B)
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Metals are good conductors of electricity; nonmetals are not.
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C)
|
Nonmetals are all gases while metals are all solids.
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D)
|
none of the above
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2.
|
Sodium (Na) and cesium (Cs) are members of which of the following categories?
| |
A)
|
alkali metals
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B)
|
alkaline earth metals
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C)
|
Halogens
| |
D)
|
noble gases
| |
3.
|
Helium (He) and radon (Rn) are members of which of the following categories?
| |
A)
|
alkali metals
| |
B)
|
alkaline earth metals
| |
C)
|
Halogens
| |
D)
|
noble gases
| |
4.
|
Elements whose names end with ium are usually metals; sodium is one example. Identify a nonmetal whose name also ends with ium.
| |
A)
|
Potassium
| |
B)
|
Magnesium
| |
C)
|
Helium
| |
D)
|
Barium
| |
5.
|
What is the difference between an atom and a molecule?
| |
A)
|
A molecule has more electrons than an atom.
| |
B)
|
An atom is charged while a molecule is not.
| |
C)
|
A molecule is an aggregate of atoms, while an atom, by definition, is a single particle.
| |
D)
|
A molecule is bigger than an atom.
| |
6.
|
How are allotropes different from isotopes?
| |
A)
|
Allotropes are ionic, while isotopes are not.
| |
B)
|
Allotropes are gases, while isotopes are generally solids.
| |
C)
|
Allotropes are single atoms, while isotopes are aggregates of atoms.
| |
D)
|
Allotropes are different molecular combinations of a single element; isotopes are atoms of the same element with different masses.
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7.
|
NH4+ is an example of which of the following?
| |
A)
|
a monatomic cation
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B)
|
a monatomic anion
| |
C)
|
a polyatomic cation
| |
D)
|
a polyatomic anion
| |
8.
|
Which of the following is an element?
| |
A)
|
N2
| |
B)
|
NH3
| |
C)
|
NO
| |
D)
|
CO
| |
9.
|
Which of the following is a compound?
| |
A)
|
N2
| |
B)
|
H2
| |
C)
|
O3
| |
D)
|
SO2
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