Question 1

The Haber process is the first step in the manufacture of sulfuric acid.

Accepted Answer

A) True 
 B)False  False

Question 2

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right.One of these interesting diagonal relationships occurs between lithium and magnesium.Which of the following is one of their similarities?

Accepted Answer

A) They both form insoluble carbonate salts. 
B) Both elements are important in treating manic-depression. 
C) Their first ionization energies are almost equal. 
D) Their densities are very similar. 
E) They both form organic compounds with polar covalent bonds from the metal to hydrocarbon group. 
A) They both form insoluble carbonate salts. 
B) Both elements are important in treating manic-depression. 
C) Their first ionization energies are almost equal. 
D) Their densities are very similar. 
E) They both form organic compounds with polar covalent bonds from the metal to hydrocarbon group. E

Question 3

Ionic hydrides do not have exact (stoichiometric)formulas.

Accepted Answer

A) True 
 B)False  False

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right.One of these interesting diagonal relationships occurs between beryllium and aluminum.Which of the following is one of their differences?

Accepted Answer

A) Some aluminum compounds and all beryllium compounds show significant covalent character in the gas phase. 
B) Beryllium forms bridge bonds in its hydrides while aluminum does not. 
C) Both form oxides that are impervious to reaction with water. 
D) The cations for both strongly polarize nearby electron clouds. 
E) Beryllium occurs in nature as the uncombined element,whereas aluminum does not. 
A) Some aluminum compounds and all beryllium compounds show significant covalent character in the gas phase. 
B) Beryllium forms bridge bonds in its hydrides while aluminum does not. 
C) Both form oxides that are impervious to reaction with water. 
D) The cations for both strongly polarize nearby electron clouds. 
E) Beryllium occurs in nature as the uncombined element,whereas aluminum does not.

Question 6

Potassium nitrate is a strong reducing agent.

Accepted Answer

A) True 
 B)False

Question 7

Write balanced equations,showing all reactants and products,to represent
a.the reaction of calcium metal with water.
b.the reaction of aluminum metal with oxygen gas.

Accepted Answer

a.Ca(s)+ 2H₂O(l) @#LAT-DLM& C

Question 8

Phosphoric acid (H3PO4)is a strong acid.

Accepted Answer

A) True 
 B)False

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

Predict the products for the following set of reactants.
Li(s)+ H2O(l) $\to$

Accepted Answer

A) Li+(aq)+ H2(g)+ O2(g) 
B) Li+(aq)+ H2(g)+ OH-(aq) 
C) LiH(s)+ O2(g) 
D) Li+(aq)+ H2O2(aq) 
E) LiOH(aq)+ H2O2(aq) 
A) Li+(aq)+ H2(g)+ O2(g) 
B) Li+(aq)+ H2(g)+ OH-(aq) 
C) LiH(s)+ O2(g) 
D) Li+(aq)+ H2O2(aq) 
E) LiOH(aq)+ H2O2(aq)

Question 11

Predict the products for the reaction of the following set of reactants.
Sr(s)+ H2O(l) $\to$

Accepted Answer

A) SrO(s)+ H2(g) 
B) Sr2+(aq)+ H2(g)+ O2(g) 
C) Sr2+(aq)+ H3O+(aq) 
D) Sr2+(aq)+ OH-(aq)+ H2(g) 
E) SrH2(s)+ O2(g) 
A) SrO(s)+ H2(g) 
B) Sr2+(aq)+ H2(g)+ O2(g) 
C) Sr2+(aq)+ H3O+(aq) 
D) Sr2+(aq)+ OH-(aq)+ H2(g) 
E) SrH2(s)+ O2(g)

Question 12

Predict the molecular shape of XeF3-.

Accepted Answer

A) linear 
B) trigonal planar 
C) trigonal pyramid 
D) T-shaped 
E) square 
A) linear 
B) trigonal planar 
C) trigonal pyramid 
D) T-shaped 
E) square

Question 13

Neon does not form any known compounds.

Accepted Answer

A) True 
 B)False

Question 14

Predict the products formed from the following set of reactants.
FeSe(s)+ HCl(aq) $\to$

Accepted Answer

A) Se(s)+ FeCl2(aq) 
B) SeCl2(s)+ Fe(s)+ H2(g) 
C) FeH2(s)+ SeCl2(l) 
D) H2Se(g)+ Fe(s)+ Cl2(g) 
E) H2Se(g)+ FeCl2(aq) 
A) Se(s)+ FeCl2(aq) 
B) SeCl2(s)+ Fe(s)+ H2(g) 
C) FeH2(s)+ SeCl2(l) 
D) H2Se(g)+ Fe(s)+ Cl2(g) 
E) H2Se(g)+ FeCl2(aq)

Question 15

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) $\to$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 16

One important feature of the chemistry of carbon is

Accepted Answer

A) its large radius that allows other atoms to fit easily around it. 
B) its low electronegativity that allows it to ionize easily. 
C) its amphoteric behavior. 
D) its ability to form multiple bonds with hydrogen. 
E) its ability to catenate. 
A) its large radius that allows other atoms to fit easily around it. 
B) its low electronegativity that allows it to ionize easily. 
C) its amphoteric behavior. 
D) its ability to form multiple bonds with hydrogen. 
E) its ability to catenate.

Question 17

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 18

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

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 19

Predict the products for the reaction of the following set of reactants.
BaO(s)+ CO2(g) $\to$

Accepted Answer

A) BaCO3(s) 
B) Ba(s)+ CO(g)+ O2(g) 
C) BaO2(s)+ CO(g) 
D) Ba2CO3(s) 
E) BaC2(s)+ O2(g) 
A) BaCO3(s) 
B) Ba(s)+ CO(g)+ O2(g) 
C) BaO2(s)+ CO(g) 
D) Ba2CO3(s) 
E) BaC2(s)+ O2(g)

Question 20

The halogens are

Accepted Answer

A) strong oxidizing agents. 
B) strong reducing agents. 
C) strong acids. 
D) strong bases. 
E) amphoteric. 
A) strong oxidizing agents. 
B) strong reducing agents. 
C) strong acids. 
D) strong bases. 
E) amphoteric.

Exam 14: The Main-Group Elements: Applying Principles of Bonding and Structure

The Haber process is the first step in the manufacture of sulfuric acid.

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right.One of these interesting diagonal relationships occurs between lithium and magnesium.Which of the following is one of their similarities?

Ionic hydrides do not have exact (stoichiometric)formulas.

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

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right.One of these interesting diagonal relationships occurs between beryllium and aluminum.Which of the following is one of their differences?

Potassium nitrate is a strong reducing agent.

Write balanced equations,showing all reactants and products,to represent a.the reaction of calcium metal with water. b.the reaction of aluminum metal with oxygen gas.

Phosphoric acid (H3PO4)is a strong acid.

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

Predict the products for the following set of reactants. Li(s)+ H2O(l) →\to→

Predict the products for the reaction of the following set of reactants. Sr(s)+ H2O(l) →\to→

Predict the molecular shape of XeF3-.

Neon does not form any known compounds.

Predict the products formed from the following set of reactants. FeSe(s)+ HCl(aq) →\to→

One important feature of the chemistry of carbon is

The nitrate anion is

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

Predict the products for the reaction of the following set of reactants. BaO(s)+ CO2(g) →\to→

The halogens are

Keys to the Study of Chemistry

The Components of Matter

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 Solutions

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 Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Phosphoric acid (H₃PO₄)is a strong acid.

Predict the products for the following set of reactants. Li(s)+ H₂O(l) $\to$

Predict the products for the reaction of the following set of reactants. Sr(s)+ H₂O(l) $\to$

Predict the molecular shape of XeF₃^-.

Predict the products formed from the following set of reactants. FeSe(s)+ HCl(aq) $\to$

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

Predict the products for the reaction of the following set of reactants. BaO(s)+ CO₂(g) $\to$