Question 1

The halogens act as oxidizing agents in most of their reactions.

Accepted Answer

A) True 
 B)False

Question 2

Oxygen gas (O2) is paramagnetic, but ozone (O3) is diamagnetic.

Accepted Answer

A) True 
 B)False

Question 3

The smallest ionization energies are found in the ____________ ___________ region of the periodic table.

Accepted Answer

A)  upper right 
B)  upper left 
C)  lower right 
D)  lower left 
E)  transition element (d-block) 
A)  upper right 
B)  upper left 
C)  lower right 
D)  lower left 
E)  transition element (d-block)

Question 4

Which of the following pairs of elements will form the longest single bond?

Accepted Answer

A)  C, F 
B)  C, N 
C)  C, S 
D)  C, O 
E)  C, H 
A)  C, F 
B)  C, N 
C)  C, S 
D)  C, O 
E)  C, H

Question 5

Neon does not form any known compounds.

Accepted Answer

A) True 
 B)False

Question 6

Identify by number (1A-8A) the main-group of the periodic table to which the described element (X) belongs, in each of the following cases.
a. X commonly forms the ion X2-.
b. X reacts with water according to the equation
X(s) + 2H2O(l) F1F1F1S1F1F1F10 X(OH)2(aq) + H2(g)
c. X exists as molecules, X2; its hydride has the formula HX.
d. X is a metal which reacts with oxygen to produce the peroxide, X2O2.

Accepted Answer

a. 6A (16)

Question 7

Group 1A elements are less reactive than group 2A elements.

Accepted Answer

A) True 
 B)False

Question 8

Silicon carbide is an important industrial chemical. Which of the following statements about silicon carbide is true?

Accepted Answer

A)  It will react with water to form acetylene. 
B)  It is used in preparation of glass which can be used at high temperature. 
C)  It is the hardest known substance. 
D)  It is a naturally occurring mineral source of silicon. 
E)  It can be doped to form a high temperature semiconductor. 
A)  It will react with water to form acetylene. 
B)  It is used in preparation of glass which can be used at high temperature. 
C)  It is the hardest known substance. 
D)  It is a naturally occurring mineral source of silicon. 
E)  It can be doped to form a high temperature semiconductor.

Question 9

The polymers containing silicon differ from polymers of carbon in which of the following ways?

Accepted Answer

A)  Silicon-based polymers are larger molecules than carbon-based polymers. 
B)  Silicon-based polymers generally have a repeating silicon-oxygen link while carbon-based polymers can have carbon-carbon links. 
C)  Silicon-based polymers generally have inorganic elements attached to the chain while carbon-based polymers generally have organic groups attached. 
D)  Silicon-based polymers tend to be rigid while carbon-based polymers are generally flexible. 
E)  Silicon forms stronger bonds than carbon. 
A)  Silicon-based polymers are larger molecules than carbon-based polymers. 
B)  Silicon-based polymers generally have a repeating silicon-oxygen link while carbon-based polymers can have carbon-carbon links. 
C)  Silicon-based polymers generally have inorganic elements attached to the chain while carbon-based polymers generally have organic groups attached. 
D)  Silicon-based polymers tend to be rigid while carbon-based polymers are generally flexible. 
E)  Silicon forms stronger bonds than carbon.

Question 10

In gaseous BeCl2, Be does not obey the octet rule; in solid BeCl2 it does.

Accepted Answer

A) True 
 B)False

Question 11

Predict the products for the following set of reactants. Cs(s) + Br2(l) F1F1F1S1F1F1F10

Accepted Answer

A)  CsBr(s) 
B)  CsBr2(s) 
C)  CsBr(l) 
D)  CsBr2(l) 
E)  Cs2Br(s) 
A)  CsBr(s) 
B)  CsBr2(s) 
C)  CsBr(l) 
D)  CsBr2(l) 
E)  Cs2Br(s)

Question 12

Phosphoric acid (H3PO4) is a strong acid.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Accepted Answer

A)  hydrogen gas 
B)  lithium peroxide 
C)  an acidic oxide 
D)  a basic oxide 
E)  lithium hydroxide 
A)  hydrogen gas 
B)  lithium peroxide 
C)  an acidic oxide 
D)  a basic oxide 
E)  lithium hydroxide

Question 14

Ionic hydrides do not have exact (stoichiometric) formulas.

Accepted Answer

A) True 
 B)False

Question 15

Sodium hypochlorite is used

Accepted Answer

A)  in chemical analysis. 
B)  as an oxidizer in rocket fuels. 
C)  as a disinfectant. 
D)  in the manufacture of steel. 
E)  as a detergent. 
A)  in chemical analysis. 
B)  as an oxidizer in rocket fuels. 
C)  as a disinfectant. 
D)  in the manufacture of steel. 
E)  as a detergent.

Question 16

The nitrate anion is

Accepted Answer

A)  a strong acid. 
B)  a strong base. 
C)  amphoteric. 
D)  a strong reducing agent. 
E)  a strong oxidizing agent. 
A)  a strong acid. 
B)  a strong base. 
C)  amphoteric. 
D)  a strong reducing agent. 
E)  a strong oxidizing agent.

Question 17

Sulfur hexafluoride is a pollutant responsible for acid rain.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is the strongest acid?

Accepted Answer

A)  HClO3 
B)  HBrO3 
C)  HIO3 
D)  HIO2 
E)  HClO 
A)  HClO3 
B)  HBrO3 
C)  HIO3 
D)  HIO2 
E)  HClO

Question 19

If an alkali metal is represented by the symbol M, what is the formula of
a. the oxide of M?
b. the peroxide of M?
c. the superoxide of M?

Accepted Answer

The answer of If an alkali metal is represented by...

Question 20

Hydrogen peroxide, H2O2, is

Accepted Answer

A)  used in the production of polymers. 
B)  used as a drying agent. 
C)  colored liquid with a low boiling point. 
D)  an acid. 
E)  an explosive. 
A)  used in the production of polymers. 
B)  used as a drying agent. 
C)  colored liquid with a low boiling point. 
D)  an acid. 
E)  an explosive.

Exam 14: Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

The halogens act as oxidizing agents in most of their reactions.

Oxygen gas (O2) is paramagnetic, but ozone (O3) is diamagnetic.

The smallest ionization energies are found in the ____________ ___________ region of the periodic table.

Which of the following pairs of elements will form the longest single bond?

Neon does not form any known compounds.

Group 1A elements are less reactive than group 2A elements.

Silicon carbide is an important industrial chemical. Which of the following statements about silicon carbide is true?

The polymers containing silicon differ from polymers of carbon in which of the following ways?

In gaseous BeCl2, Be does not obey the octet rule; in solid BeCl2 it does.

Predict the products for the following set of reactants. Cs(s) + Br2(l) 

Phosphoric acid (H3PO4) is a strong acid.

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Ionic hydrides do not have exact (stoichiometric) formulas.

Sodium hypochlorite is used

The nitrate anion is

Sulfur hexafluoride is a pollutant responsible for acid rain.

Which of the following is the strongest acid?

If an alkali metal is represented by the symbol M, what is the formula of a. the oxide of M? b. the peroxide of M? c. the superoxide of M?

Hydrogen peroxide, H2O2, is

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The 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

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 the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Oxygen gas (O₂) is paramagnetic, but ozone (O₃) is diamagnetic.

The smallest ionization energies are found in the __ _ region of the periodic table.

In gaseous BeCl₂, Be does not obey the octet rule; in solid BeCl₂ it does.

Predict the products for the following set of reactants. Cs(s) + Br₂(l) 

Phosphoric acid (H₃PO₄) is a strong acid.

Hydrogen peroxide, H₂O₂, is