Question 1

A compound has a formula mass of 61.98 amu and is comprised of atoms of sodium and oxygen in a definite ratio.The name of the compound described here is

Accepted Answer

A)  sodium monoxide.
B)  disodium oxide.
C)  sodium oxide.
D)  sodium dioxide.
E)  none of the above

Question 2

Ionic compounds always contain positive and negative ions.

Accepted Answer

A) True 
 B)False

Question 3

What is the correct formula for the molecular compound heptaphosphorus octafluoride?

Accepted Answer

A)  P5F8
B)  P 7F6
C)  P6F7
D)  P7F8
E)  none of the above

Question 4

The correct name for H2SO3 is sulfurous acid.

Accepted Answer

A) True 
 B)False

Question 5

What is the oxygen-to-hydrogen mass ratio for H2O2?

Accepted Answer

A)  0.125
B)  4
C)  8
D)  16
E)  none of the above

Question 6

What is the name of HNO2?

Accepted Answer

A)  Nitric acid
B)  Nitrous acid
C)  hydronitrous acid
D)  hydronitric acid
E)  none of the above

Question 7

SO2 is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 8

What is the name of HIO3?

Accepted Answer

A)  iodic acid
B)  hydroioidic acid
C)  hydroiodous acid
D)  iodous acid
E)  none of the above

Question 9

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 10

Type II metal cations are usually found in the section of the periodic table known as the transition metals.

Accepted Answer

A) True 
 B)False

Question 11

The fact that water has an oxygen-to-hydrogen mass ratio of 8.0 illustrates the law of conservation of mass.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following species is a molecular element?

Accepted Answer

A)  neon
B)  sodium
C)  chlorine
D)  carbon dioxide
E)  none of the above

Question 13

The proper name for for HI is hydroiodic acid.

Accepted Answer

A) True 
 B)False

Question 14

The phosphorous-to-hydrogen mass ratio is 10.2 for a compound.This ratio could correspond to the compound

Accepted Answer

A)  PH.
B)  PH2.
C)  PH3.
D)  PH6.
E)  none of the above

Question 15

Which among the following elements does NOT exist as a diatomic molecule in nature?

Accepted Answer

A)  hydrogen
B)  nitrogen
C)  fluorine
D)  neon
E)  none of the above

Question 16

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

Accepted Answer

A)  AlO2
B)  Al2O3
C)  Al3O2
D)  AlO
E)  none of the above

Question 17

The subscripts in a chemical formula do not change for a given compound.

Accepted Answer

A) True 
 B)False

Question 18

What is the name of HI (aq) ?

Accepted Answer

A)  hydroiodous acid
B)  hydroiodic acid
C)  iodic acid
D)  iodous acid
E)  none of the above

Question 19

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 20

What is the correct formula for a compound that has three oxygen atoms and one sulfur atom?

Accepted Answer

A)  O3S
B)  SO3
C)  3OS
D)  SO3
E)  none of the above

Exam 5: Molecules and Compounds

Which of the following species is a molecular element?

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The proper name for for HI is hydroiodic acid.

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What is the name of HIO3?

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The fact that water has an oxygen-to-hydrogen mass ratio of 8.0 illustrates the law of conservation of mass.

Correct AnswerverifiedShow Answer

The phosphorous-to-hydrogen mass ratio is 10.2 for a compound.This ratio could correspond to the compound

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The correct name for H2SO3 is sulfurous acid.

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Type II metal cations are usually found in the section of the periodic table known as the transition metals.

Correct AnswerverifiedShow Answer

A compound has a formula mass of 61.98 amu and is comprised of atoms of sodium and oxygen in a definite ratio.The name of the compound described here is

Correct AnswerverifiedShow Answer

What is the oxygen-to-hydrogen mass ratio for H2O2?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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What is the name of HI (aq) ?

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Ionic compounds always contain positive and negative ions.

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Which among the following elements does NOT exist as a diatomic molecule in nature?

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What is the correct formula for a compound that has three oxygen atoms and one sulfur atom?

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The subscripts in a chemical formula do not change for a given compound.

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What is the name of HNO2?

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SO2 is an ionic compound.

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What is the correct formula for the molecular compound heptaphosphorus octafluoride?

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

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What is the name of HIO₃^?

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The correct name for H₂SO₃ is sulfurous acid.

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What is the oxygen-to-hydrogen mass ratio for H₂O₂?

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What is the name of HNO₂?

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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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