Unit Test — Unit test Answers
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Which rule is used for writing the name of an ionic base?
A
The chemical name begins with “hydro.”B
The chemical name ends with “hydroxide.”C
The “ide” ending is changed to “ic.”D
The polyatomic “ate” ending is changed to “ic.”22
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Which element has the fewest valence electrons available for bonding?
A
iodineB
aluminumC
carbonD
nitrogen23
What is the name of the ionic compound AlBr3?
A
bromine aluminideB
bromine aluminumC
aluminum bromineD
aluminum bromide24
Which characteristic best explains the difference in melting behavior of covalent substances and ionic substances?
A
Ionic substances have weaker intermolecular attractions.B
Ionic substances usually have stronger atomic bonds.C
Covalent substances have weaker intermolecular attractions.D
Covalent substances usually have stronger atomic bonds.25
What is the chemical formula for ammonium carbonate?
A
(NH)CO
B
(NH)HCO
C
NH(CO)
D
NH(CO)
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