3.8: Unit 3 Practice Problems
- Page ID
- 260635
Question 1
The loss of electrons from an atom is called __________.
- Answer
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oxidation
The gain of electrons by an atom is called ___________.
- Answer
-
Reduction
An atom with a charge (either positive or negative) is called __________.
- Answer
-
ion
A positively charged atom is called _________.
- Answer
-
cation
A negatively charged atom is called _________.
- Answer
-
anion
Question 2
Name the following ionic compounds.
MgS
NaCl
Ca3N2
KOH
AlPO4
- Answer
-
magnesium sulfide
sodium chloride
calcium nitride
potassium hydroxide
aluminum phosphate
Question 3
Given the following electronegativity values, determine the type of bond (polar covalent, nonpolar covalent, or ionic) which will occur between the atoms below.
Li - F
C - O
C - H
- Answer
-
Li - F: ionic bond
C - O: polar covalent bond
C - H: nonpoloar covalent
Question 4
Given the name, write the formula for the following compounds.
calcium bromide
magnesium nitrate
iron (III) oxide
silver (I) sulfide
ammonium hydrogen phosphate
- Answer
-
CaBr2
Mg(NO3)2
Fe2O3
Ag2S
(NH4)2HPO4
Question 5
Write Lewis structures for the following:
(a) H2
(b) HBr
(c) PCl3
(d) SF2
(e) C2H4
(f) NO-
(g) CN–
- Answer a
- Answer b
- Answer c
- Answer d
- Answer e
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Answer f
- Answer g