Question 1

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water. What is its formula?

Accepted Answer

A)  (ClO) 2
B)  Cl 2O
C)  Cl 2O 2
D)  Cl 2O 4
E)  ClO 2F) A) and D)
G) B) and D)

Question 2

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 B)
G) D) and E)

Question 3

What is the formula for lead (II)  oxide?

Accepted Answer

A)  PbO
B)  PbO 2
C)  Pb 2O
D)  PbO 4
E)  Pb 2O 3F) C) and D)
G) A) and D)

Question 4

Who is credited with first measuring the charge of the electron?

Accepted Answer

A)  Dalton
B)  Gay-Lussac
C)  Thomson
D)  Millikan
E)  RutherfordF) A) and C)
G) A) and B)

Question 5

Which of the following has the most metallic character?

Accepted Answer

A)  Ge
B)  In
C)  O
D)  P
E)  SbF) All of the above
G) A) and C)

Question 6

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

Question 7

Kaolinite, a clay mineral with the formula Al4Si4O10(OH) 8, is used as a filler in slick-paper for magazines and as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite.

Accepted Answer

A)  1.792 mass %
B)  24.80 mass %
C)  30.81 mass %
D)  34.12 mass %
E)  55.81 mass %F) A) and B)
G) B) and E)

Question 8

Who is credited with measuring the mass/charge ratio of the electron?

Accepted Answer

A)  Dalton
B)  Gay-Lussac
C)  Thomson
D)  Millikan
E)  RutherfordF) B) and D)
G) A) and B)

Question 9

Who is credited with discovering the atomic nucleus?

Accepted Answer

A)  Dalton
B)  Gay-Lussac
C)  Thomson
D)  Millikan
E)  RutherfordF) A) and B)
G) All of the above

Question 10

Calcium hydroxide is used in mortar, plaster, and cement. What is its formula?

Accepted Answer

A)  CaOH
B)  CaOH 2
C)  Ca 2OH
D)  Ca(OH) 2
E)  CaHO 2F) All of the above
G) B) and E)

Question 11

In the ionic compound with the general formula M2 X3, the likely charge on X is

Accepted Answer

A)  +1.
B)  +3.
C)  −1.
D)  −2.
E)  −3.F) A) and E)
G) C) and D)

Question 12

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

Accepted Answer

A)  FeO
B)  Fe 2O
C)  FeO 3
D)  Fe 2O 5
E)  Fe 2O 3F) A) and D)
G) C) and E)

Question 13

Lead (Pb) is a main-group element.

Accepted Answer

A) True 
 B)False

Question 14

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 D)
G) All of the above

Question 15

Which of the following ions occurs commonly?

Accepted Answer

A)  P 3+
B)  Br 7+
C)  O 6+
D)  Ca 2+
E)  K −F) D) and E)
G) A) and B)

Question 16

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

Accepted Answer

A)  KMnO 3
B)  KMnO 4
C)  K 2MnO 4
D)  K(MnO 4) 2
E)  K 2Mn 2O 7F) A) and D)
G) All of the above

Question 17

Which of the following sets are isoelectronic (i.e., have the same number of electrons) ?Br−, Kr, Sr2+C, N−, O2−Mg2+, Ca2+, Sr2+O2−, O, O2+Ag+, Cd2+, Pd

Accepted Answer

A)  i and ii
B)  i and v
C)  i, iii and iv
D)  ii, iii and v
E)  i, iii iv and vF) A) and E)
G) B) and E)

Question 18

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

Accepted Answer

A)  NH 4 + ammonium
B)  S 2− sulfide
C)  CN − cyanide
D)  S 2O 3 2− thiosulfate
E)  ClO 3 − perchlorateF) A) and D)
G) B) and C)

Question 19

After an atom has lost an electron it becomes a/an __________ and has a __________ charge.

Accepted Answer

A)  anion, positive
B)  isotope, negative
C)  anion, negative
D)  cation, positive
E)  nucleus, positiveF) C) and D)
G) All of the above

Question 20

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

Accepted Answer

A)  C 12H 28
B)  C 6H 14
C)  C 3H 7
D)  CH 2.3
E)  C 0.43HF) A) and B)
G) A) and C)

Exam 2: The Components of Matter

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water. What is its formula?

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What is the formula for lead (II) oxide?

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Which of the following has the most metallic character?

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Lead (Pb) is a main-group element.

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In the ionic compound with the general formula M2 X3, the likely charge on X is

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After an atom has lost an electron it becomes a/an __________ and has a __________ charge.

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Which of the following sets are isoelectronic (i.e., have the same number of electrons) ?Br−, Kr, Sr2+C, N−, O2−Mg2+, Ca2+, Sr2+O2−, O, O2+Ag+, Cd2+, Pd

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

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Who is credited with first measuring the charge of the electron?

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What is the name of P4Se3?

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

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Calcium hydroxide is used in mortar, plaster, and cement. What is its formula?

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Who is credited with measuring the mass/charge ratio of the electron?

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

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Kaolinite, a clay mineral with the formula Al4Si4O10(OH) 8, is used as a filler in slick-paper for magazines and as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite.

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Who is credited with discovering the atomic nucleus?

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Which of the following ions occurs commonly?

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

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

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

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In the ionic compound with the general formula M₂ X₃, the likely charge on X is

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After an atom has lost an electron it becomes a/an and has a charge.

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Which of the following sets are isoelectronic (i.e., have the same number of electrons) ?Br⁻, Kr, Sr²⁺C, N⁻, O²⁻Mg²⁺, Ca²⁺, Sr²⁺O²⁻, O, O²⁺Ag⁺, Cd²⁺, Pd

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

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What is the name of P₄Se₃?

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Kaolinite, a clay mineral with the formula Al₄Si₄O₁₀(OH) ₈, is used as a filler in slick-paper for magazines and as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite.

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

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