Question 1

Pure acids in the liquid state consist of

Accepted Answer

A) neutral molecules. 
B) H+ ions and neutral molecules. 
C) H+ ions and negative ions. 
D) H+ and OH- ions. 
A) neutral molecules. 
B) H+ ions and neutral molecules. 
C) H+ ions and negative ions. 
D) H+ and OH- ions. A

Question 2

The individual particles in a covalent solid are held together as a result of

Accepted Answer

A) electron transfer between adjacent atoms. 
B) electron sharing between adjacent atoms. 
C) the attraction of polar molecules. 
D) a gas of freely moving electrons. 
A) electron transfer between adjacent atoms. 
B) electron sharing between adjacent atoms. 
C) the attraction of polar molecules. 
D) a gas of freely moving electrons. B

Question 3

With increasing temperature, the solubility of a gas in a liquid

Accepted Answer

A) decreases. 
B) increases. 
C) remains the same. 
D) Any of these choices could be correct, depending on the particular gas and liquid. 
A) decreases. 
B) increases. 
C) remains the same. 
D) Any of these choices could be correct, depending on the particular gas and liquid. A

Question 4

At room temperature and atmospheric pressure, ammonia is a

Accepted Answer

A) gas whose formula is NH3. 
B) liquid whose formula is NH3. 
C) gas whose formula is NH4. 
D) liquid whose formula is NH4. 
A) gas whose formula is NH3. 
B) liquid whose formula is NH3. 
C) gas whose formula is NH4. 
D) liquid whose formula is NH4.

Question 5

Pure water does not

Accepted Answer

A) contain H+ ions. 
B) contain OH- ions. 
C) contain polar molecules. 
D) form ionic crystals when it freezes. 
A) contain H+ ions. 
B) contain OH- ions. 
C) contain polar molecules. 
D) form ionic crystals when it freezes.

Question 6

When a strong acid is added to water,

Accepted Answer

A) more of it dissolves than in the case of a weak acid. 
B) more of it dissociates than in the case of a weak acid. 
C) more of it forms hydroxide ions than in the case of a weak acid. 
D) less of it forms hydronium ions than in the case of a weak acid. 
A) more of it dissolves than in the case of a weak acid. 
B) more of it dissociates than in the case of a weak acid. 
C) more of it forms hydroxide ions than in the case of a weak acid. 
D) less of it forms hydronium ions than in the case of a weak acid.

Question 7

The formula for iron(II) hydroxide is

Accepted Answer

A) FeOH. 
B) Fe2OH. 
C) Fe(OH)2. 
D) Fe2(OH)2. 
A) FeOH. 
B) Fe2OH. 
C) Fe(OH)2. 
D) Fe2(OH)2.

Question 8

The symbol of the hydronium ion is

Accepted Answer

A) H3O-. 
B) H3O+. 
C) OH-. 
D) OH+. 
A) H3O-. 
B) H3O+. 
C) OH-. 
D) OH+.

Question 9

The individual particles in a molecular solid are held together as a result of

Accepted Answer

A) electron transfer between adjacent atoms. 
B) electron sharing between adjacent atoms. 
C) the attraction of polar molecules. 
D) a sea of freely moving electrons. 
A) electron transfer between adjacent atoms. 
B) electron sharing between adjacent atoms. 
C) the attraction of polar molecules. 
D) a sea of freely moving electrons.

Question 10

Pure water has a pH of

Accepted Answer

A) 0. 
B) 1. 
C) 7. 
D) 10. 
A) 0. 
B) 1. 
C) 7. 
D) 10.

Question 11

Bases do not

Accepted Answer

A) taste bitter. 
B) turn red litmus to blue. 
C) liberate H2 when mixed with an active metal. 
D) produce OH- ions in water solution. 
A) taste bitter. 
B) turn red litmus to blue. 
C) liberate H2 when mixed with an active metal. 
D) produce OH- ions in water solution.

Question 12

An example of an ionic solid is

Accepted Answer

A) ice. 
B) diamond. 
C) table salt. 
D) tin. 
A) ice. 
B) diamond. 
C) table salt. 
D) tin.

Question 13

Which solids are the best electrical conductors?

Accepted Answer

A) covalent 
B) ionic 
C) molecular 
D) metallic 
A) covalent 
B) ionic 
C) molecular 
D) metallic

Question 14

A solution of carbon dioxide, CO2, in water is

Accepted Answer

A) acidic. 
B) basic. 
C) neutral. 
D) Any of these choices could be correct, depending on the concentration. 
A) acidic. 
B) basic. 
C) neutral. 
D) Any of these choices could be correct, depending on the concentration.

Question 15

Polar molecules behave as though they

Accepted Answer

A) contain tiny magnets. 
B) have a positive charge at both ends. 
C) have a negative charge at both ends. 
D) have a positive charge at one end and a negative charge at the other. 
A) contain tiny magnets. 
B) have a positive charge at both ends. 
C) have a negative charge at both ends. 
D) have a positive charge at one end and a negative charge at the other.

Question 16

When an acid is added to a basic solution, the pH of the solution

Accepted Answer

A) increases. 
B) decreases. 
C) is unchanged. 
D) Any of these choices could be correct, depends on the natures of the acid and base. 
A) increases. 
B) decreases. 
C) is unchanged. 
D) Any of these choices could be correct, depends on the natures of the acid and base.

Question 17

Dissolving an electrolyte in water results in the formation of

Accepted Answer

A) polar molecules. 
B) covalent molecules. 
C) ions. 
D) a precipitate. 
A) polar molecules. 
B) covalent molecules. 
C) ions. 
D) a precipitate.

Question 18

An insoluble solid that results from a chemical reaction is called

Accepted Answer

A) a solute. 
B) a colloid. 
C) an electrolyte. 
D) a precipitate. 
A) a solute. 
B) a colloid. 
C) an electrolyte. 
D) a precipitate.

Question 19

The chief use of freshwater in the world is in

Accepted Answer

A) agriculture. 
B) industry. 
C) mining. 
D) domestic applications. 
A) agriculture. 
B) industry. 
C) mining. 
D) domestic applications.

Question 20

The weakest bonds are

Accepted Answer

A) ionic. 
B) covalent. 
C) metallic. 
D) van der Waals. 
A) ionic. 
B) covalent. 
C) metallic. 
D) van der Waals.

Pure acids in the liquid state consist of

The individual particles in a covalent solid are held together as a result of

With increasing temperature, the solubility of a gas in a liquid

At room temperature and atmospheric pressure, ammonia is a

Pure water does not

When a strong acid is added to water,

The formula for iron(II) hydroxide is

The symbol of the hydronium ion is

The individual particles in a molecular solid are held together as a result of

Pure water has a pH of

Bases do not

An example of an ionic solid is

Which solids are the best electrical conductors?

A solution of carbon dioxide, CO₂, in water is

Polar molecules behave as though they

When an acid is added to a basic solution, the pH of the solution

Dissolving an electrolyte in water results in the formation of

An insoluble solid that results from a chemical reaction is called

The chief use of freshwater in the world is in

The weakest bonds are

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Exam 11: Crystals, Ions, and Solutions

Pure acids in the liquid state consist of

The individual particles in a covalent solid are held together as a result of

With increasing temperature, the solubility of a gas in a liquid

At room temperature and atmospheric pressure, ammonia is a

Pure water does not

When a strong acid is added to water,

The formula for iron(II) hydroxide is

The symbol of the hydronium ion is

The individual particles in a molecular solid are held together as a result of

Pure water has a pH of

Bases do not

An example of an ionic solid is

Which solids are the best electrical conductors?

A solution of carbon dioxide, CO2, in water is

Polar molecules behave as though they

When an acid is added to a basic solution, the pH of the solution

Dissolving an electrolyte in water results in the formation of

An insoluble solid that results from a chemical reaction is called

The chief use of freshwater in the world is in

The weakest bonds are

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe

Filters

A solution of carbon dioxide, CO₂, in water is