Question 1
How many oxygen atoms are in the formula Al2(CO3)3?
a. 3
b. 9
c. 1
d. 6
e. none of the above
ANSWER
B
Question 2
The law of constant composition states:
a. Matter cannot be either created or destroyed in a chemical reaction.
b. The nucleus is a dense region of positive charge that always contains protons and
neutrons.
c. All samples of a given compound have the same proportions of their constituent
elements.
d. All atoms of a given element have a constant composition and are different than atoms of
any other element.
e. none of these
ANSWER
1
,C
Question 3
What is the formula for an ionic compound made of aluminum and oxygen?
a. AlO2
b. Al2O3
c. Al3O2
d. AlO
e. none of the above
ANSWER
B
Question 4
What is the correct formula for the molecular compound heptaphosphorus octafluoride?
a. P5F8
b. P7F6
c. P6F7
d. P7F8
e. none of the above
ANSWER
D
Question 5
2
, What is the correct name of the compound whose formula is BF3?
a. boron trifluoride
b. boron fluoride
c. monoboron trifluorine
d. boron(III) fluoride
e. none of the above
ANSWER
A
Question 6
What is the name of the ionic compound made of beryllium and chlorine?
a. beryllium(II) chloride
b. beryllium dichloride
c. beryllium chloride
d. monoberyllium dichloride
e. none of the above
ANSWER
C
Question 7
Which of the following is a molecular compound?
a. barium sulfide
3
How many oxygen atoms are in the formula Al2(CO3)3?
a. 3
b. 9
c. 1
d. 6
e. none of the above
ANSWER
B
Question 2
The law of constant composition states:
a. Matter cannot be either created or destroyed in a chemical reaction.
b. The nucleus is a dense region of positive charge that always contains protons and
neutrons.
c. All samples of a given compound have the same proportions of their constituent
elements.
d. All atoms of a given element have a constant composition and are different than atoms of
any other element.
e. none of these
ANSWER
1
,C
Question 3
What is the formula for an ionic compound made of aluminum and oxygen?
a. AlO2
b. Al2O3
c. Al3O2
d. AlO
e. none of the above
ANSWER
B
Question 4
What is the correct formula for the molecular compound heptaphosphorus octafluoride?
a. P5F8
b. P7F6
c. P6F7
d. P7F8
e. none of the above
ANSWER
D
Question 5
2
, What is the correct name of the compound whose formula is BF3?
a. boron trifluoride
b. boron fluoride
c. monoboron trifluorine
d. boron(III) fluoride
e. none of the above
ANSWER
A
Question 6
What is the name of the ionic compound made of beryllium and chlorine?
a. beryllium(II) chloride
b. beryllium dichloride
c. beryllium chloride
d. monoberyllium dichloride
e. none of the above
ANSWER
C
Question 7
Which of the following is a molecular compound?
a. barium sulfide
3
