Question 1

Which of the following is a non-metal?

Accepted Answer

A)   lithium, Li, Z = 3
B)   bromine, Br, Z = 35
C)   mercury, Hg, Z = 80
D)   bismuth, Bi, Z = 83
E)   sodium, Na, Z = 11F) A) and C)
G) All of the above

Question 2

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

Accepted Answer

A)   barium oxide
B)   barium(II)  oxide
C)   barium monoxide
D)   baric oxide
E)   barium peroxideF) B) and D)
G) B) and C)

Question 3

Which of the following compounds is ionic?

Accepted Answer

A)   PF3
B)   CS2
C)   HCl
D)   SO2
E)   MgCl2F) C) and D)
G) A) and C)

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

Accepted Answer

A)   ZnAc2
B)   ZnCH3COO
C)   Zn(CH3COO) 2
D)   Zn2CH3COO
E)   ZnCH3COCH3F) D) and E)
G) C) and D) C

Question 6

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 B)
G) A) and C)

Question 7

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) A) and B)
G) A) and C)

Question 8

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) C) and D)
G) A) and B) B

Question 9

Sodium chromate is used to protect iron from corrosion and rusting. Determine its molecular mass.

Accepted Answer

A)   261.97 amu
B)   238.98 amu
C)   161.97 amu
D)   138.98 amu
E)   74.99 amuF) B) and C)
G) B) and E)

Question 10

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Accepted Answer

A)   KMnO3
B)   KMnO4
C)   K2MnO4
D)   K(MnO4) 2
E)   K2Mn2O7F) All of the above
G) B) and D)

Question 11

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

Accepted Answer

A)   NH4+ ammonium
B)   S2- sulfide
C)   CN- cyanide
D)   S2O32- thiosulfate
E)   ClO3- perchlorateF) B) and E)
G) C) and D)

Question 12

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

Accepted Answer

A)   H3PO4 phosphoric acid
B)   HNO3 nitric acid
C)   NaHCO3 sodium carbonate
D)   H2CO3 carbonic acid
E)   KOH potassium hydroxideF) A) and B)
G) A) and E)

Question 13

The compound, NaH2PO4, is present in many baking powders. What is its name?

Accepted Answer

A)   sodium biphosphate
B)   sodium hydrogen phosphate
C)   sodium dihydrogen phosphate
D)   sodium hydrophosphate
E)   sodium dihydride phosphateF) D) and E)
G) C) and E)

Question 14

All neutral atoms of tin have 50 protons and 50 electrons.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following compounds is covalent?

Accepted Answer

A)   CaCl2
B)   MgO
C)   Al2O3
D)   Cs2S
E)   PCl3F) B) and E)
G) A) and D)

Question 16

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Accepted Answer

A)   hydrochloric acid
B)   perchloric acid
C)   chloric acid
D)   chlorous acid
E)   hydrochlorate acidF) C) and D)
G) All of the above

Question 17

For each of the following names, write down the corresponding formula, including charge where appropriate (atomic numbers and mass numbers are not required):
a. zinc ion
b. nitrite ion
c. carbonic acid
d. cyanide ion

Accepted Answer

a. Zn²⁺
b. N...

Question 18

Atoms of one element cannot be converted to another element by any known method.

Accepted Answer

A) True 
 B)False  False

Question 19

What is the name of P4Se3?

Accepted Answer

A)   phosphorus selenide
B)   phosphorus triselenide
C)   tetraphosphorus selenide
D)   phosphoric selenide
E)   tetraphosphorus triselenideF) A) and C)
G) C) and D)

Question 20

a. Give the names of the following ions:
(i) O22-
(ii) SO42-
b. Write down the formulas of the following ions:
(i) ammonium
(ii) nitrate

Accepted Answer

a. (i) per...

Exam 2: The Components of Matter

Which of the following is a non-metal?

Correct AnswerverifiedShow Answer

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

Correct AnswerverifiedShow Answer

Which of the following compounds is ionic?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

Which of the following is a metalloid?

Correct AnswerverifiedShow Answer

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 AnswerverifiedB

Sodium chromate is used to protect iron from corrosion and rusting. Determine its molecular mass.

Correct AnswerverifiedShow Answer

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The compound, NaH2PO4, is present in many baking powders. What is its name?

Correct AnswerverifiedShow Answer

All neutral atoms of tin have 50 protons and 50 electrons.

Correct AnswerverifiedShow Answer

Which of the following compounds is covalent?

Correct AnswerverifiedShow Answer

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Correct AnswerverifiedShow Answer

For each of the following names, write down the corresponding formula, including charge where appropriate (atomic numbers and mass numbers are not required): a. zinc ion b. nitrite ion c. carbonic acid d. cyanide ion

Correct Answerverifieda. Zn2+b. N...View AnswerShow Answer

Atoms of one element cannot be converted to another element by any known method.

Correct AnswerverifiedFalse

What is the name of P4Se3?

Correct AnswerverifiedShow Answer

a. Give the names of the following ions: (i) O22- (ii) SO42- b. Write down the formulas of the following ions: (i) ammonium (ii) nitrate

Correct Answerverifieda. (i) per...View AnswerShow Answer

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C

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B

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The compound, NaH₂PO₄, is present in many baking powders. What is its name?

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What is the name of the acid formed when HClO₄liquid is dissolved in water?

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a. Zn²⁺
b. N...
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False

What is the name of P₄Se₃?

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a. Give the names of the following ions: (i) O₂^2- (ii) SO₄^2- b. Write down the formulas of the following ions: (i) ammonium (ii) nitrate

Correct Answer
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a. (i) per...
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