Question 1

-Which element indicated on the above periodic tableforms a binary hydride with molecular structure (3)shown above?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 2

Describe the color changes when sulfur (melting point 113°C,boiling point 445°C)is heated from 25°C to 500°C? It turns from a yellow solid to a

Accepted Answer

A) dark reddish brown liquid and then boils. 
B) reddish brown solid and then into reddish brown liquid and then boils. 
C) straw colored liquid which turns dark reddish brown and then it boils. 
D) yellow liquid and then it boils. 
A) dark reddish brown liquid and then boils. 
B) reddish brown solid and then into reddish brown liquid and then boils. 
C) straw colored liquid which turns dark reddish brown and then it boils. 
D) yellow liquid and then it boils.

Question 3

What is the structure of sulfuric acid?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 4

What are the three most abundant elements in the Earth's crust?

Accepted Answer

A) H,O,C 
B) O,Al,Si 
C) O,Si,Fe 
D) Al,Si,Fe 
A) H,O,C 
B) O,Al,Si 
C) O,Si,Fe 
D) Al,Si,Fe

Question 5

What element was one of the "holes" in Mendeleev's periodic table?

Accepted Answer

A) Si 
B) Ge 
C) Sn 
D) Pb 
A) Si 
B) Ge 
C) Sn 
D) Pb

Question 6

Why does Cu dissolve in concentrated nitric acid but not in concentrated hydrochloric acid?

Accepted Answer

A) The chloride ion is a stronger oxidizing agent than the nitrate ion. 
B) The hydrochloric acid is not as strong as nitric acid. 
C) The hydrochloric acid produces insufficient hydronium ion to react with the copper. 
D) The nitrate ion is a stronger oxidizing agent than the hydronium ion. 
A) The chloride ion is a stronger oxidizing agent than the nitrate ion. 
B) The hydrochloric acid is not as strong as nitric acid. 
C) The hydrochloric acid produces insufficient hydronium ion to react with the copper. 
D) The nitrate ion is a stronger oxidizing agent than the hydronium ion.

Question 7

Which one of the following is a pseudohalide?

Accepted Answer

A) CO32- 
B) OH- 
C) CN- 
D) SO42- 
A) CO32- 
B) OH- 
C) CN- 
D) SO42-

Question 8

Which one of the following compounds that contains a Group 5A element is least likely to exist?

Accepted Answer

A) NCl3 
B) NCl5 
C) PCl3 
D) PCl5 
A) NCl3 
B) NCl5 
C) PCl3 
D) PCl5

Question 9

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (3)shown above?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 10

-Which element indicated on the above periodic table forms a binary hydride with molecular structure (2)shown above?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 11

Carbon is the ________ most abundant element by mass in living organisms.

Accepted Answer

A) first 
B) second 
C) third 
D) fourth 
A) first 
B) second 
C) third 
D) fourth

Question 12

Which element of group 4A has the highest melting point?

Accepted Answer

A) C 
B) Si 
C) Sn 
D) Pb 
A) C 
B) Si 
C) Sn 
D) Pb

Question 13

The elements indicated by the shaded area in the following periodic table are all

Accepted Answer

A) gases. 
B) metals. 
C) nonmetals. 
D) semimetals. 
A) gases. 
B) metals. 
C) nonmetals. 
D) semimetals.

Question 14

What is the most stable oxidation state for Bi in bismuth compounds?

Accepted Answer

A) -3 
B) 0 
C) +3 
D) +5 
A) -3 
B) 0 
C) +3 
D) +5

Question 15

-Which element indicated on the above periodic table forms a binary hydride with molecular structure (1)shown above?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 16

Which is not a facile reaction of aluminum?

Accepted Answer

A) 2 Al(s)+ 3 Br2(g)→ 2 AlBr3(s) 
B) 4 Al(s)+ 3 O2(g)→ 2 Al2O3(s) 
C) 2 Al(s)+ N2(g)→ 2 AlN(s) 
D) 2 Al(s)+ 6 H2O(l)→ 2 Al(OH)3 + 3 H2(g) 
A) 2 Al(s)+ 3 Br2(g)→ 2 AlBr3(s) 
B) 4 Al(s)+ 3 O2(g)→ 2 Al2O3(s) 
C) 2 Al(s)+ N2(g)→ 2 AlN(s) 
D) 2 Al(s)+ 6 H2O(l)→ 2 Al(OH)3 + 3 H2(g)

Question 17

In which compound is nitrogen in its highest possible oxidation state?

Accepted Answer

A) NH3 
B) N2H4 
C) HNO2 
D) HNO3 
A) NH3 
B) N2H4 
C) HNO2 
D) HNO3

Question 18

Which compound contains hydrogen atoms that form two types of bonds?

Accepted Answer

A) B2H6 
B) C2H2 
C) C6H6 
D) N2H4 
A) B2H6 
B) C2H2 
C) C6H6 
D) N2H4

Question 19

The charge,n,on the cyclic anion Si6O18n that is found in the mineral beryl is ________.

Accepted Answer

Question 20

When a person exhales through a straw into water,the water will have a(n)________ (acidic,basic,neutral)pH due to the reaction ________.

Accepted Answer

acidic,CO₂(

Exam 19: The Main-Group Elements

-Which element indicated on the above periodic tableforms a binary hydride with molecular structure (3)shown above?

Describe the color changes when sulfur (melting point 113°C,boiling point 445°C)is heated from 25°C to 500°C? It turns from a yellow solid to a

What is the structure of sulfuric acid?

What are the three most abundant elements in the Earth's crust?

What element was one of the "holes" in Mendeleev's periodic table?

Why does Cu dissolve in concentrated nitric acid but not in concentrated hydrochloric acid?

Which one of the following is a pseudohalide?

Which one of the following compounds that contains a Group 5A element is least likely to exist?

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (3)shown above?

-Which element indicated on the above periodic table forms a binary hydride with molecular structure (2)shown above?

Carbon is the ________ most abundant element by mass in living organisms.

Which element of group 4A has the highest melting point?

The elements indicated by the shaded area in the following periodic table are all

What is the most stable oxidation state for Bi in bismuth compounds?

-Which element indicated on the above periodic table forms a binary hydride with molecular structure (1)shown above?

Which is not a facile reaction of aluminum?

In which compound is nitrogen in its highest possible oxidation state?

Which compound contains hydrogen atoms that form two types of bonds?

The charge,n,on the cyclic anion Si6O18n that is found in the mineral beryl is ________.

When a person exhales through a straw into water,the water will have a(n)________ (acidic,basic,neutral)pH due to the reaction ________.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

The charge,n,on the cyclic anion Si₆O₁₈ⁿ that is found in the mineral beryl is ________.

When a person exhales through a straw into water,the water will have a(n) (acidic,basic,neutral)pH due to the reaction .