Question 1

Fluorine is considered which of the following?

Accepted Answer

A)  atomic element
B)  molecular element
C)  molecular compound
D)  ionic compound
E)  none of the above

Question 2

What is the name of the compound made from lithium and oxygen?

Accepted Answer

A)  lithium dioxide
B)  lithium(I) oxide
C)  oxygen lithide
D)  lithium oxide
E)  none of the above

Question 3

The name trisodium phosphate is incorrect for the compound Na3PO4 because:

Accepted Answer

A)  this compound should be called trisodium monophosphate.
B)  the sodium has a negative 3 charge.
C)  you cannot use a prefix for the first element in a molecular compound.
D)  you cannot use a prefix for the first element of an ionic compound.
E)  none of the above

Question 4

The correct formula for sodium permanganate is NaMgO4.

Accepted Answer

A) True 
 B)False

Question 5

The ionic compound MgO is named manganese oxide.

Accepted Answer

A) True 
 B)False

Question 6

The correct formula for calcium fluoride is CaF3.

Accepted Answer

A) True 
 B)False

Question 7

SO2 is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 8

What is the formula mass of magnesium nitride?

Accepted Answer

A)  38.32
B)  90.65
C)  100.95
D)  116.33
E)  none of the above

Question 9

What is the correct name for the BrO4 1- ion?

Accepted Answer

A)  hypobromite
B)  perbromate
C)  bromite
D)  bromate
E)  none of the above

Question 10

Metal cations that form more than one type of ion are usually found in the section of the periodic table known as the transition metals.

Accepted Answer

A) True 
 B)False

Question 11

If there are two ions in a series of oxoanions,the one with more oxygen is given the ending "-ite."

Accepted Answer

A) True 
 B)False

Question 12

The proper name for HI is hydroiodic acid.

Accepted Answer

A) True 
 B)False

Question 13

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 above

Question 14

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: LiSO4

Question 15

What is correct name of the compound whose formula is BF3?

Accepted Answer

A)  boron trifluoride
B)  boron fluoride
C)  monoboron trifluorine
D)  boron(III) fluoride
E)  none of the above

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

What is the formula mass for potassium nitrate?

Accepted Answer

A)  92.99 amu
B)  117.11 amu
C)  85.11 amu
D)  101.10 amu
E)  none of the above

Question 18

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 above

Question 19

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 20

Carbon dioxide is an example of a molecular compound.

Accepted Answer

A) True 
 B)False

Exam 5: Molecules and Compounds

What is the name of the compound made from lithium and oxygen?

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

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SO2 is an ionic compound.

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Which formula shown is incorrect for the name given?

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What is the correct name for the BrO4 1- ion?

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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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The correct formula for sodium permanganate is NaMgO4.

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What is the formula mass of magnesium nitride?

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The name trisodium phosphate is incorrect for the compound Na3PO4 because:

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Metal cations that form more than one type of ion are usually found in the section of the periodic table known as the transition metals.

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What is the formula mass for potassium nitrate?

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The ionic compound MgO is named manganese oxide.

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If there are two ions in a series of oxoanions,the one with more oxygen is given the ending "-ite."

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Fluorine is considered which of the following?

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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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The correct formula for calcium fluoride is CaF3.

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Carbon dioxide is an example of a molecular compound.

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

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What is correct name of the compound whose formula is BF3?

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The proper name for HI is hydroiodic acid.

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SO₂ is an ionic compound.

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What is the correct name for the BrO₄ ^1- ion?

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The correct formula for sodium permanganate is NaMgO₄.

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The name trisodium phosphate is incorrect for the compound Na₃PO₄ because:

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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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What is correct name of the compound whose formula is BF₃?

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