Question 1

The substance, CoCl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

Accepted Answer

A)   cobalt dichloride
B)   cobalt(II)  chloride
C)   cobalt chloride
D)   cobaltic chloride
E)   copper(II)  chlorideF) A) and E)
G) B) and E)

Question 2

Determine the molecular mass of iron (III)  bromide hexahydrate, a substance used as a catalyst in organic reactions.

Accepted Answer

A)   403.65 amu
B)   355.54 amu
C)   317.61 amu
D)   313.57 amu
E)   295.56 amuF) A) and B)
G) B) and E)

Question 3

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Accepted Answer

A)   FeO
B)   Fe2O
C)   FeO3
D)   Fe2O5
E)   Fe2O3F) A) and C)
G) A) and B)

Question 4

What is the name of BBr3?

Accepted Answer

A)   boron bromide
B)   boric bromide
C)   boron tribromide
D)   tribromoboride
E)   bromine triborideF) B) and E)
G) A) and D)

Question 5

Which of the following is the empirical formula for hexane, C6H14?

Accepted Answer

A)   C12H28
B)   C6H14
C)   C3H7
D)   CH2.3
E)   C0.43HF) All of the above
G) B) and D)

Question 6

In nature, some elements exist as molecules, while others do not.

Accepted Answer

A) True 
 B)False

Question 7

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: -5.92; -4.44; -2.96; -8.88. The units are arbitrary. What is the likely value of the electronic charge in these arbitrary units?

Accepted Answer

A)   -1.11
B)   -1.48
C)   -2.22
D)   -2.96
E)   -5.55F) A) and D)
G) C) and E)

Question 8

Modern studies have shown that the Law of Multiple Proportions is not valid.

Accepted Answer

A) True 
 B)False

Question 9

Which one of the following combinations of names and formulas of ions is incorrect?

Accepted Answer

A)   O2- oxide
B)   Cd2+ cadmium
C)   ClO3- chlorate
D)   HCO3- hydrogen carbonate
E)   NO2- nitrateF) A) and E)
G) B) and E)

Question 10

A row of the periodic table is called a

Accepted Answer

A)   group.
B)   period.
C)   isotopic mixture.
D)   family.
E)   subshell.F) A) and D)
G) A) and C)

Question 11

Which of the following ions occurs commonly?

Accepted Answer

A)   N3+
B)   S6+
C)   O2-
D)   Ca+
E)   Cl+F) D) and E)
G) A) and E)

Question 12

Which of the following is a metalloid?

Accepted Answer

A)   carbon, C, Z = 6
B)   sulfur, S, Z = 16
C)   germanium, Ge, Z = 32
D)   iridium, Z = 77
E)   bromine, Br, Z = 35F) All of the above
G) A) and C)

Question 13

Lithium forms compounds which are used in dry cells and storage batteries and in high-temperature lubricants. It has two naturally occurring isotopes, 6Li (isotopic mass = 6.015121 amu)  and 7Li (isotopic mass = 7.016003 amu) . Lithium has an atomic mass of 6.9409 amu. What is the percent abundance of lithium-6?

Accepted Answer

A)   92.50%
B)   86.66%
C)   46.16%
D)   7.503%
E)   6.080%F) A) and C)
G) A) and B)

Question 14

Which one of the following combinations of names and formulas of ions is incorrect?

Accepted Answer

A)   Ba2+ barium
B)   S2- sulfate
C)   CN- cyanide
D)   ClO4- perchlorate
E)   HCO3- bicarbonateF) A) and C)
G) C) and E)

Question 15

What is the name of PCl3?

Accepted Answer

A)   phosphorus chloride
B)   phosphoric chloride
C)   phosphorus trichlorate
D)   trichlorophosphide
E)   phosphorus trichlorideF) D) and E)
G) B) and C)

Question 16

Barium sulfate is used in manufacturing photographic paper. What is its formula?

Accepted Answer

A)   BaSO4
B)   Ba(SO4) 2
C)   Ba2SO4
D)   Ba2(SO4) 3
E)   BaSO3F) B) and D)
G) B) and C)

Question 17

The substance, KClO3, is a strong oxidizer used in explosives, fireworks, and matches. What is its name?

Accepted Answer

A)   potassium chlorite
B)   potassium chloride
C)   potassium(I)  chlorite
D)   potassium(I)  chlorate
E)   potassium chlorateF) B) and C)
G) C) and E)

Question 18

The molecular formula of a compound provides more information than its structural formula.

Accepted Answer

A) True 
 B)False

Question 19

When an atom is represented by the symbol  , the value of A is the

Accepted Answer

A)   number of neutrons in the atom.
B)   number of protons in the atom.
C)   atomic mass of the element.
D)   total number of electrons and neutrons in the atom.
E)   total number of protons and neutrons in the atom.F) B) and C)
G) All of the above

Question 20

A red glaze on porcelain can be produced by using MnSO4. What is its name?

Accepted Answer

A)   manganese disulfate
B)   manganese(II)  sulfate
C)   manganese(IV)  sulfate
D)   manganese sulfate
E)   manganese(I)  sulfateF) A) and B)
G) D) and E)

Exam 2: The Components of Matter

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: -5.92; -4.44; -2.96; -8.88. The units are arbitrary. What is the likely value of the electronic charge in these arbitrary units?

Correct Answer
verified

The molecular formula of a compound provides more information than its structural formula.

Correct Answer
verified

Which of the following is the empirical formula for hexane, C₆H₁₄?

Correct Answer
verified

Which one of the following combinations of names and formulas of ions is incorrect?

Correct Answer
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Which of the following ions occurs commonly?

Correct Answer
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Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Correct Answer
verified

A red glaze on porcelain can be produced by using MnSO₄. What is its name?

Correct Answer
verified

Which one of the following combinations of names and formulas of ions is incorrect?

Correct Answer
verified

A row of the periodic table is called a

Correct Answer
verified

Determine the molecular mass of iron (III) bromide hexahydrate, a substance used as a catalyst in organic reactions.

Correct Answer
verified

Barium sulfate is used in manufacturing photographic paper. What is its formula?

Correct Answer
verified

In nature, some elements exist as molecules, while others do not.

Correct Answer
verified

What is the name of BBr₃?

Correct Answer
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Which of the following is a metalloid?

Correct Answer
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The substance, CoCl₂, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

Correct Answer
verified

The substance, KClO₃, is a strong oxidizer used in explosives, fireworks, and matches. What is its name?

Correct Answer
verified

When an atom is represented by the symbol , the value of A is the

Correct Answer
verified

What is the name of PCl₃?

Correct Answer
verified

Correct Answer
verified

Modern studies have shown that the Law of Multiple Proportions is not valid.

Correct Answer
verified

Exam 2: The Components of Matter

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: -5.92; -4.44; -2.96; -8.88. The units are arbitrary. What is the likely value of the electronic charge in these arbitrary units?

Correct AnswerverifiedShow Answer

The molecular formula of a compound provides more information than its structural formula.

Correct AnswerverifiedShow Answer

Which of the following is the empirical formula for hexane, C6H14?

Correct AnswerverifiedShow Answer

Which one of the following combinations of names and formulas of ions is incorrect?

Correct AnswerverifiedShow Answer

Which of the following ions occurs commonly?

Correct AnswerverifiedShow Answer

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Correct AnswerverifiedShow Answer

A red glaze on porcelain can be produced by using MnSO4. What is its name?

Correct AnswerverifiedShow Answer

Which one of the following combinations of names and formulas of ions is incorrect?

Correct AnswerverifiedShow Answer

A row of the periodic table is called a

Correct AnswerverifiedShow Answer

Determine the molecular mass of iron (III) bromide hexahydrate, a substance used as a catalyst in organic reactions.

Correct AnswerverifiedShow Answer

Barium sulfate is used in manufacturing photographic paper. What is its formula?

Correct AnswerverifiedShow Answer

In nature, some elements exist as molecules, while others do not.

Correct AnswerverifiedShow Answer

What is the name of BBr3?

Correct AnswerverifiedShow Answer

Which of the following is a metalloid?

Correct AnswerverifiedShow Answer

The substance, CoCl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

Correct AnswerverifiedShow Answer

The substance, KClO3, is a strong oxidizer used in explosives, fireworks, and matches. What is its name?

Correct AnswerverifiedShow Answer

When an atom is represented by the symbol , the value of A is the

Correct AnswerverifiedShow Answer

What is the name of PCl3?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Modern studies have shown that the Law of Multiple Proportions is not valid.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Which of the following is the empirical formula for hexane, C₆H₁₄?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A red glaze on porcelain can be produced by using MnSO₄. What is its name?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the name of BBr₃?

Correct Answer
verified

Correct Answer
verified

The substance, CoCl₂, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

Correct Answer
verified

The substance, KClO₃, is a strong oxidizer used in explosives, fireworks, and matches. What is its name?

Correct Answer
verified

Correct Answer
verified

What is the name of PCl₃?

Correct Answer
verified

Correct Answer
verified

Correct Answer
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