Chemistry 101- Midterm Ivy Tech (5-7)-
Test Questions and Correct Answers.
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
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 C
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
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
, 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
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
Which of the following is a molecular compound?
a. barium sulfide
b. calcium acetate
c. potassium hydroxide
d. nitrogen monoxide
e. none of the above - Answer D
Choose the pair of names and formulas that do NOT match.
a. copper(I) nitrate: CuNO3
b. copper(II) nitride: Cu3N2
c. copper(II) nitrate: Cu(NO3)2
d. copper(II) nitrite: Cu(NO2)2
e. all of these are correct - Answer E
What is the name of the compound whose formula is Na2O?
a. sodium monoxide
Test Questions and Correct Answers.
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
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 C
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
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
, 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
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
Which of the following is a molecular compound?
a. barium sulfide
b. calcium acetate
c. potassium hydroxide
d. nitrogen monoxide
e. none of the above - Answer D
Choose the pair of names and formulas that do NOT match.
a. copper(I) nitrate: CuNO3
b. copper(II) nitride: Cu3N2
c. copper(II) nitrate: Cu(NO3)2
d. copper(II) nitrite: Cu(NO2)2
e. all of these are correct - Answer E
What is the name of the compound whose formula is Na2O?
a. sodium monoxide
