Question 1

Ionic compounds are usually made up of a metal and a nonmetal.

Accepted Answer

A) True 
 B)False

Question 2

Carbon dioxide is an example of a molecular compound.

Accepted Answer

A) True 
 B)False

Question 3

Which formula shown is incorrect for the name given?

Accepted Answer

A)  strontium carbonate: SrCO3
B)  ammonium cyanide: NH4CN
C)  potassium acetate: KC2H3O2
D)  calcium nitrate: Ca(NO3) 2
E)  lithium sulfate: LiSO4F) A) and C)
G) D) and E)

Question 4

A certain oxyacid is derived from the oxyanion SO32-.The formula for the oxyacid is

Accepted Answer

A)  H2SO4.
B)  HSO3.
C)  H2SO3.
D)  H3SO3.
E)  none of the aboveF) A) and E)
G) C) and D)

Question 5

How many carbon atoms are in the formula Al2(CO3) 3?

Accepted Answer

A)  3
B)  9
C)  1
D)  6
E)  none of the aboveF) D) and E)
G) B) and C)

Question 6

The oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?

Accepted Answer

A)  Law of Constant Composition
B)  Law of Constant Mass Ratio
C)  Law of Conservation of Mass
D)  Law of Constant Whole Number Ratio
E)  none of the aboveF) B) and E)
G) A) and D)

Question 7

What is the formula for an ionic compound made of carbon and oxygen?

Accepted Answer

A)  CO2
B)  C2O
C)  CO
D)  CO3
E)  Carbon and oxygen do not form an ionic compound.F) A) and C)
G) B) and C)

Question 8

What is the mass ratio of Na to S in sodium sulfide?

Accepted Answer

A)  7.17
B)  55.06
C)  0.717
D)  1.43
E)  none of the aboveF) All of the above
G) A) and E)

Question 9

Carbon monoxide is considered which of the following?

Accepted Answer

A)  atomic element
B)  molecular element
C)  molecular compound
D)  ionic compound
E)  none of the aboveF) B) and E)
G) B) and C)

Question 10

How many of each type of atom are there in the formula (NH4) 2HPO4?

Accepted Answer

A)  N = 2,H = 9,P = 1,O = 4
B)  N = 1,H = 5,P = 1,O = 4
C)  N = 2,H = 5,P = 1,O = 4
D)  N = 2,H = 8,P = 1,O = 4
E)  none of the aboveF) B) and C)
G) A) and E)

Question 11

The law of constant composition states: All samples of a given compound have the same proportions of their constituent elements.

Accepted Answer

A) True 
 B)False

Question 12

The proper name for the acid HF is hydrofluoric acid.

Accepted Answer

A) True 
 B)False

Question 13

Molecular elements do not exist in nature.

Accepted Answer

A) True 
 B)False

Question 14

What is the formula for an ionic compound made of magnesium and sulfur?

Accepted Answer

A)  MgS
B)  MgS2
C)  Mg2S
D)  Mg2S3
E)  none of the aboveF) B) and D)
G) A) and B)

Question 15

The correct formula for sodium permanganate is NaMgO4.

Accepted Answer

A) True 
 B)False

Question 16

The element nitrogen normally exists in nature as a diatomic molecule.

Accepted Answer

A) True 
 B)False

Question 17

What is the formula mass of sulfurous acid?

Accepted Answer

A)  82.08 amu
B)  98.08 amu
C)  83.09 amu
D)  66.08 amu
E)  none of the aboveF) A) and D)
G) C) and D)

Question 18

The correct formula for calcium fluoride is CaF3.

Accepted Answer

A) True 
 B)False

Question 19

The properties of a compound are an average of the properties of the individual elements.

Accepted Answer

A) True 
 B)False

Question 20

The proper name for SF6 is sulfur tetrafluoride.

Accepted Answer

A) True 
 B)False

Exam 5: Molecules and Compounds

A certain oxyacid is derived from the oxyanion SO32-.The formula for the oxyacid is

Correct AnswerverifiedShow Answer

The proper name for the acid HF is hydrofluoric acid.

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The proper name for SF6 is sulfur tetrafluoride.

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Molecular elements do not exist in nature.

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Carbon monoxide is considered which of the following?

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What is the mass ratio of Na to S in sodium sulfide?

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Ionic compounds are usually made up of a metal and a nonmetal.

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The element nitrogen normally exists in nature as a diatomic molecule.

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How many carbon atoms are in the formula Al2(CO3) 3?

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The oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?

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What is the formula mass of sulfurous acid?

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The properties of a compound are an average of the properties of the individual elements.

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What is the formula for an ionic compound made of magnesium and sulfur?

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The correct formula for sodium permanganate is NaMgO4.

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Carbon dioxide is an example of a molecular compound.

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The correct formula for calcium fluoride is CaF3.

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What is the formula for an ionic compound made of carbon and oxygen?

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How many of each type of atom are there in the formula (NH4) 2HPO4?

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Which formula shown is incorrect for the name given?

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The law of constant composition states: All samples of a given compound have the same proportions of their constituent elements.

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A certain oxyacid is derived from the oxyanion SO₃²^-.The formula for the oxyacid is

Correct Answer
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The proper name for SF₆ is sulfur tetrafluoride.

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How many carbon atoms are in the formula Al₂(CO₃) ₃?

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The correct formula for sodium permanganate is NaMgO₄.

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The correct formula for calcium fluoride is CaF₃.

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How many of each type of atom are there in the formula (NH₄) ₂HPO₄?

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