Chemistry Concepts and Applications

Chapter 4: Formation of Compounds

Chapter Test Practice

1
If potassium is in Group 1A, how many electrons do you expect to see in its Lewis Dot structure?

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A)1
B)2
C)3
D)4
2
Both plants and animals use __________ and give off __________ during respiration.

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A)nitrogen, oxygen
B)nitrogen, carbon dioxide
C)oxygen, carbon dioxide
D)oxygen, nitrogen
3
Which statement is NOT true of a situation in which a sodium atom loses an electron to a chlorine atom?

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A)The sodium ion has a stable octet.
B)The chlorine has a stable octet.
C)The chlorine atom has a negative charge.
D)The sodium ion has a negative charge.
4
How many electrons are shared when two atoms of oxygen combine with one atom of carbon?
A)8
B)12
C)16
D)22
5
Carbon dioxide is __________ in water.
A)blue
B)insoluble
C)a solid
D)soluble
6
Except for helium, this expresses the stability of a noble-gas atom's filled s and p sublevels.
A)the duet rule
B)the octet rule
C)the sextet rule
D)the trio rule
7
In general, the strong crystal structure of ionic compounds causes them to have __________.
A)high melting points
B)low melting points
C)soft structures
D)low boiling points
8
How many single and double covalent bonds does a carbon atom have in a carbon dioxide molecule?
A)two double bonds
B)four single bonds
C)one double bond and two single bonds
D)two triple bonds
9
A compound that conducts electricity when melted or dissolved in water is an __________.
A)electrolyte
B)electron
C)molecule
D)hydrocarbon
10
In general, the interparticle forces in covalent compounds are __________ those in ionic compounds.
A)multiples of
B)the same strength as
C)stronger than
D)weaker than
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