Question 1

What is the formula for lead (II) oxide?

Accepted Answer

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

Question 2

Who is credited with discovering the atomic nucleus?

Accepted Answer

A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford 
A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford

Question 3

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, positive 
A) anion, positive 
B) isotope, negative 
C) anion, negative 
D) cation, positive 
E) nucleus, positive

Question 4

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

Question 5

What is the name of P4Se3?

Accepted Answer

A) Phosphorus selenide 
B) Phosphorus triselenide 
C) Tetraphosphorus selenide 
D) Phosphoric selenide 
E) Tetraphosphorus triselenide 
A) Phosphorus selenide 
B) Phosphorus triselenide 
C) Tetraphosphorus selenide 
D) Phosphoric selenide 
E) Tetraphosphorus triselenide

Question 6

Which of the following has the most metallic character?

Accepted Answer

A) Ge 
B) In 
C) O 
D) P 
E) Sb 
A) Ge 
B) In 
C) O 
D) P 
E) Sb

Question 7

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

Accepted Answer

A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford 
A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford

Question 8

Lead (Pb) is a main-group element.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following ions occurs commonly?

Accepted Answer

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

Question 10

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

Question 11

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 7 
A) KMnO 3 
B) KMnO 4 
C) K 2MnO 4 
D) K(MnO 4)2 
E) K 2Mn 2O 7

Question 12

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

Question 13

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

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 chlorate 
A) Potassium chlorite 
B) Potassium chloride 
C) Potassium(I)chlorite 
D) Potassium(I)chlorate 
E) Potassium chlorate

Question 15

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. 
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.

Question 16

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

Question 17

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

Question 18

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

Accepted Answer

A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford 
A) Dalton 
B) Gay-Lussac 
C) Thomson 
D) Millikan 
E) Rutherford

Question 19

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 2 
A) CaOH 
B) CaOH 2 
C) Ca 2OH 
D) Ca(OH)2 
E) CaHO 2

Question 20

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

Exam 2: The Components of Matter

What is the formula for lead (II) oxide?

Who is credited with discovering the atomic nucleus?

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

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

What is the name of P4Se3?

Which of the following has the most metallic character?

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

Lead (Pb) is a main-group element.

Which of the following ions occurs commonly?

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

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

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

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

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

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

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.

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

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

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

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

Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

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

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

What is the name of P₄Se₃?

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

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

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

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.