Question 1
Polyatomic ions are charged particles that have two or more atoms that are connected and act as one unit.
True
False
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Question 2
The hydroxide ion always has the same charge.
True
False
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Question 3
LiOH is an ionic compound.
True
False
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Question 4
Solutions with extra hydroxide ions are basic (as opposed to acidic) solutions.
True
False
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Question 5
The hydroxide ion has a charge of:
+1
+2
-1
-2
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Question 6
Polyatomic ions and are:
Single atoms with a charge.
Two or more atoms that are connected and act as one unit with a charge.
At least four atoms connected together with a charge.
All of the above.
None of the above.
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Question 7
The correct formula for sodium, Na, combined with sulfate, SO
4
2-
, is:
NaSO
4
Na
2
SO
4
Na(SO
4
)
2
None of the above.
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Question 8
The correct formula for barium, Ba, combined with nitrate, NO
3
-
, is:
BaNO
3
Ba
2
NO
3
Ba(NO
3
)
2
None of the above.
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Question 9
The correct formula for potassium, K, combined with hydroxide, OH
-
is:
KOH
K
2
OH
KOH
2
K(OH)
2
None of the above.
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Question 10
The correct formula for strontium, Sr, combined with hydroxide, OH
-
is:
SrOH
Sr
2
OH
SrOH
2
Sr(OH)
2
None of the above.
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Question 11
Ionic compounds can also be formed using polyatomic ions.
True
False
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Question 12
The hydroxide ion is a particle with a negative one (-1) charge that has two atoms: one oxygen atom and one hydrogen atom.
True
False
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Question 13
Each polyatomic ion has a charge associated with it that doesn't change.
True
False
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Question 14
In an ionic compound the charges of the ions should balance out.
True
False
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Question 15
Many bases are ionic compounds that have OH
-
as the negative ion.
True
False
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Question 16
NaOH, sodium hydroxide, is a good example of a base.
True
False
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Question 17
When NaOH is placed in water it separates into Na
+
and OH
-
ions that are free to float around in the solution.
True
False
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Question 18
Any of the elements in the first two columns (excluding hydrogen) combined with the hydroxide ion will form an ionic compound that will be a base.
True
False
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