Question 1

The commercial method of isolating magnesium from seawater is called

Accepted Answer

A) the Solvay process. 
B) the Goldschmidt process. 
C) the Dow process. 
D) the Hall-Héroult process. 
E) the Bayer process. 
A) the Solvay process. 
B) the Goldschmidt process. 
C) the Dow process. 
D) the Hall-Héroult process. 
E) the Bayer process.

Question 2

Nitric acid is obtained commercially from

Accepted Answer

A) NH3. 
B) NH4NO3. 
C) Mg3N2. 
D) NaNO2. 
E) CO(NH2)2. 
A) NH3. 
B) NH4NO3. 
C) Mg3N2. 
D) NaNO2. 
E) CO(NH2)2.

Question 3

Which of the following statements concerning lead is false?

Accepted Answer

A) Lead is predominantly used to make electrodes in batteries. 
B) Lead ions exist only in the +4 oxidation state. 
C) Lead reacts with hydrochloric acid,but because lead(II)chloride is insoluble in water,the reaction soon stops. 
D) Lead is commercially prepared by reducing lead(II)oxide with carbon monoxide. 
E) Lead is commonly found in galena,a lead(II)sulfide mineral. 
A) Lead is predominantly used to make electrodes in batteries. 
B) Lead ions exist only in the +4 oxidation state. 
C) Lead reacts with hydrochloric acid,but because lead(II)chloride is insoluble in water,the reaction soon stops. 
D) Lead is commercially prepared by reducing lead(II)oxide with carbon monoxide. 
E) Lead is commonly found in galena,a lead(II)sulfide mineral.

Question 4

Which of the following statements concerning aluminum is false?

Accepted Answer

A) Sapphires and rubies are composed principally of aluminum oxide. 
B) Aluminum hydroxide is amphoteric. 
C) Aluminum can have both +1 and +3 oxidation states. 
D) The main industrial source of aluminum is bauxite ore. 
E) Corundum is a hard mineral of aluminum oxide. 
A) Sapphires and rubies are composed principally of aluminum oxide. 
B) Aluminum hydroxide is amphoteric. 
C) Aluminum can have both +1 and +3 oxidation states. 
D) The main industrial source of aluminum is bauxite ore. 
E) Corundum is a hard mineral of aluminum oxide.

Question 5

Roasting is an example of which step in the production of a metal?

Accepted Answer

A) reduction 
B) alloying 
C) smithing 
D) refining 
E) preliminary treatment 
A) reduction 
B) alloying 
C) smithing 
D) refining 
E) preliminary treatment

Question 6

Most HCl(g)is obtained commercially

Accepted Answer

A) by reaction of MnO2 with concentrated HCl. 
B) by reaction of NaCl with concentrated H2SO4. 
C) by electrolysis of NaCl. 
D) by distillation of HCl(aq). 
E) as a by-product from the chlorination of hydrocarbons. 
A) by reaction of MnO2 with concentrated HCl. 
B) by reaction of NaCl with concentrated H2SO4. 
C) by electrolysis of NaCl. 
D) by distillation of HCl(aq). 
E) as a by-product from the chlorination of hydrocarbons.

Question 7

What is the acid anhydride of perchloric acid?

Accepted Answer

A) Cl2O 
B) Cl2O3 
C) Cl2O7 
D) Cl2O5 
E) ClO2 
A) Cl2O 
B) Cl2O3 
C) Cl2O7 
D) Cl2O5 
E) ClO2

Question 8

A chemical method of isolating aluminum oxide from aluminum ore is called

Accepted Answer

A) the Hall-Héroult process. 
B) the Solvay process. 
C) the Goldschmidt process. 
D) the Bayer process. 
E) the Dow process. 
A) the Hall-Héroult process. 
B) the Solvay process. 
C) the Goldschmidt process. 
D) the Bayer process. 
E) the Dow process.

Question 9

Which of the following statements concerning calcium is false?

Accepted Answer

A) Calcium metal is produced by the reduction of calcium oxide by aluminum. 
B) Coral reefs are composed mainly of calcium hydroxide. 
C) The mineral gypsum is composed of calcium sulfate dihydrate. 
D) Calcium reacts with hydrogen to produce calcium hydride. 
E) Seashells are composed principally of calcium carbonate. 
A) Calcium metal is produced by the reduction of calcium oxide by aluminum. 
B) Coral reefs are composed mainly of calcium hydroxide. 
C) The mineral gypsum is composed of calcium sulfate dihydrate. 
D) Calcium reacts with hydrogen to produce calcium hydride. 
E) Seashells are composed principally of calcium carbonate.

Question 10

Which of the following equations describes the application of the Goldschmidt process to manganese(III)oxide?

Accepted Answer

A) 2Mn2O3(s)+ 6H2(g)→ 4MnH3(s)+ 3O2(g) 
B) Mn2O3(s)+ 3H2SO4(aq)→ Mn2(SO4)3(aq)+ 3H2O(l) 
C) Mn2O3(s)+ 3H2O(l)→ 2Mn(OH)3(aq) 
D) Mn2O3(s)+ 2Al(s)→ 2Mn(l)+ Al2O3(l) 
E) 2Mn2O3(s)→ 4Mn(l)+ 3O2(g) 
A) 2Mn2O3(s)+ 6H2(g)→ 4MnH3(s)+ 3O2(g) 
B) Mn2O3(s)+ 3H2SO4(aq)→ Mn2(SO4)3(aq)+ 3H2O(l) 
C) Mn2O3(s)+ 3H2O(l)→ 2Mn(OH)3(aq) 
D) Mn2O3(s)+ 2Al(s)→ 2Mn(l)+ Al2O3(l) 
E) 2Mn2O3(s)→ 4Mn(l)+ 3O2(g)

Question 11

Which of the following statements concerning phosphorus is false?

Accepted Answer

A) At room temperature,white phosphorus is a molecular solid,while red phosphorus is a polymeric form of phosphorus.. 
B) The molecular formula of white phosphorus is P4. 
C) Phosphorus is commonly found in phosphate minerals such as fluorapatite. 
D) Because phosphorus may use 3d orbitals for bonding,it can form the +7 oxidation state. 
E) White phosphorus spontaneously combusts when exposed to air. 
A) At room temperature,white phosphorus is a molecular solid,while red phosphorus is a polymeric form of phosphorus.. 
B) The molecular formula of white phosphorus is P4. 
C) Phosphorus is commonly found in phosphate minerals such as fluorapatite. 
D) Because phosphorus may use 3d orbitals for bonding,it can form the +7 oxidation state. 
E) White phosphorus spontaneously combusts when exposed to air.

Question 12

A primary industrial purpose of calcium phosphate is

Accepted Answer

A) use as a fungicide. 
B) direct use as a plant growth supplement. 
C) use for treatment with sulfuric acid to make fertilizers. 
D) use as a starting material for PVC plastics. 
E) use to make phosphorus-containing vitamin pills. 
A) use as a fungicide. 
B) direct use as a plant growth supplement. 
C) use for treatment with sulfuric acid to make fertilizers. 
D) use as a starting material for PVC plastics. 
E) use to make phosphorus-containing vitamin pills.

Question 13

Which of the following metals tends to form compounds where the metal has a +2 or +4 oxidation number?

Accepted Answer

A) Al 
B) Ba 
C) Pb 
D) Na 
E) ​In 
A) Al 
B) Ba 
C) Pb 
D) Na 
E) ​In

Question 14

Which of the following statements concerning elemental chlorine is incorrect?

Accepted Answer

A) Cl2 is used to purify water. 
B) Cl2 is used in the preparation of polyvinyl chloride. 
C) Cl2 is used in the production of bleaching agents. 
D) Cl2 is used for the preparation of NaCl. 
E) Cl2 is used in the preparation of Br2. 
A) Cl2 is used to purify water. 
B) Cl2 is used in the preparation of polyvinyl chloride. 
C) Cl2 is used in the production of bleaching agents. 
D) Cl2 is used for the preparation of NaCl. 
E) Cl2 is used in the preparation of Br2.

Question 15

An alkali metal (designated M)reacts with water with the formation of

Accepted Answer

A) MOH + H2. 
B) M2O + H2. 
C) M(OH)2 + H2. 
D) MO + H2. 
E) MOH + O2. 
A) MOH + H2. 
B) M2O + H2. 
C) M(OH)2 + H2. 
D) MO + H2. 
E) MOH + O2.

Question 16

In the production of aluminum by the Hall-Héroult process,what is the product produced at the cathode?

Accepted Answer

A) CO 
B) F2 
C) Al 
D) Na 
E) O2 
A) CO 
B) F2 
C) Al 
D) Na 
E) O2

Question 17

Which of the following is not a normal characteristic of a metal?

Accepted Answer

A) ability to form cations 
B) low ionization energy 
C) conductor of electricity 
D) high electron affinity 
E) malleability 
A) ability to form cations 
B) low ionization energy 
C) conductor of electricity 
D) high electron affinity 
E) malleability

Question 18

Which property of carbon distinguishes it from the other elements in its group?

Accepted Answer

A) the existence of more than one allotrope of carbon 
B) its four valence electrons 
C) its nonmetallic character 
D) the ability of carbon to catenate to a high degree 
E) the ability of carbon to form more than one oxide 
A) the existence of more than one allotrope of carbon 
B) its four valence electrons 
C) its nonmetallic character 
D) the ability of carbon to catenate to a high degree 
E) the ability of carbon to form more than one oxide

Question 19

Nitric acid can be obtained directly by the reaction of _____________with water.

Accepted Answer

A) N2O 
B) NO 
C) N2 
D) N2O3 
E) N2O5 
A) N2O 
B) NO 
C) N2 
D) N2O3 
E) N2O5

Question 20

Which of the following reactions describes the formation of a covalent hydride?

Accepted Answer

A) 2Cs(s)+ H2(g)→ 2CsH(s) 
B) 2Li(s)+ H2(g)→ 2LiH(s) 
C) Ba(s)+ H2(g)→ BaH2(s) 
D) S8(s)+ 8H2(g)→ 8H2S(g) 
E) 2Al(s)+ 3H2(g)→ 2AlH3(s) 
A) 2Cs(s)+ H2(g)→ 2CsH(s) 
B) 2Li(s)+ H2(g)→ 2LiH(s) 
C) Ba(s)+ H2(g)→ BaH2(s) 
D) S8(s)+ 8H2(g)→ 8H2S(g) 
E) 2Al(s)+ 3H2(g)→ 2AlH3(s)

Exam 21: Chemistry of the Main-Group Metals

The commercial method of isolating magnesium from seawater is called

Nitric acid is obtained commercially from

Which of the following statements concerning lead is false?

Which of the following statements concerning aluminum is false?

Roasting is an example of which step in the production of a metal?

Most HCl(g)is obtained commercially

What is the acid anhydride of perchloric acid?

A chemical method of isolating aluminum oxide from aluminum ore is called

Which of the following statements concerning calcium is false?

Which of the following equations describes the application of the Goldschmidt process to manganese(III)oxide?

Which of the following statements concerning phosphorus is false?

A primary industrial purpose of calcium phosphate is

Which of the following metals tends to form compounds where the metal has a +2 or +4 oxidation number?

Which of the following statements concerning elemental chlorine is incorrect?

An alkali metal (designated M)reacts with water with the formation of

In the production of aluminum by the Hall-Héroult process,what is the product produced at the cathode?

Which of the following is not a normal characteristic of a metal?

Which property of carbon distinguishes it from the other elements in its group?

Nitric acid can be obtained directly by the reaction of _____________with water.

Which of the following reactions describes the formation of a covalent hydride?

Chemistry and Measurement

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Chemical Reactions

The Gaseous State

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Quantum Theory of the Atom

Electron Configurations and Periodicity

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Molecular Geometry and Chemical Bonding Theory

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