Question 1

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. D

Question 2

Pure water is not

Accepted Answer

A)  polar. 
B)  a good solvent. 
C)  a compound. 
D)  saturated. 
A)  polar. 
B)  a good solvent. 
C)  a compound. 
D)  saturated. D

Question 3

An example of a weak acid is

Accepted Answer

A)  nitric acid. 
B)  acetic acid. 
C)  sulfuric acid. 
D)  hydrochloric acid. 
A)  nitric acid. 
B)  acetic acid. 
C)  sulfuric acid. 
D)  hydrochloric acid. B

Question 4

Most solids are

Accepted Answer

A)  amorphous. 
B)  crystalline. 
C)  covalent. 
D)  polar. 
A)  amorphous. 
B)  crystalline. 
C)  covalent. 
D)  polar.

Question 5

An example of a molecular solid is

Accepted Answer

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

Question 6

An amorphous solid

Accepted Answer

A)  has its particles arranged in a regular pattern. 
B)  is held together by ionic bonds. 
C)  does not melt at a definite temperature but softens gradually. 
D)  consists of nonpolar molecules. 
A)  has its particles arranged in a regular pattern. 
B)  is held together by ionic bonds. 
C)  does not melt at a definite temperature but softens gradually. 
D)  consists of nonpolar molecules.

Question 7

The extremely strong material called graphene

Accepted Answer

A)  consists of molecules in the form of cages made up of 60 carbon atoms. 
B)  consists of carbon nanotubes. 
C)  is a one-atom-thick sheet of carbon atoms. 
D)  is a thick sheet of carbon atoms. 
A)  consists of molecules in the form of cages made up of 60 carbon atoms. 
B)  consists of carbon nanotubes. 
C)  is a one-atom-thick sheet of carbon atoms. 
D)  is a thick sheet of carbon atoms.

Question 8

A solution of table salt, NaCl, 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 9

The chloride ion Cl- is

Accepted Answer

A)  less reactive than the chlorine molecule Cl2. 
B)  more reactive than the chlorine molecule Cl2. 
C)  equal in reactivity to the chlorine molecule Cl2. 
D)  Any of these choices could be correct, depending on the temperature. 
A)  less reactive than the chlorine molecule Cl2. 
B)  more reactive than the chlorine molecule Cl2. 
C)  equal in reactivity to the chlorine molecule Cl2. 
D)  Any of these choices could be correct, depending on the temperature.

Question 10

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.

Question 11

The formula for ironII) hydroxide is

Accepted Answer

A)  FeOH. 
B)  Fe2OH. 
C)  FeOH)2. 
D)  Fe2OH)2. 
A)  FeOH. 
B)  Fe2OH. 
C)  FeOH)2. 
D)  Fe2OH)2.

Question 12

An emulsion in which tiny oil droplets are dispersed in water is an example of

Accepted Answer

A)  a colloid. 
B)  an aerosol. 
C)  a saturated solution. 
D)  a polar liquid. 
A)  a colloid. 
B)  an aerosol. 
C)  a saturated solution. 
D)  a polar liquid.

Question 13

When equivalent amounts of a strong acid and a strong base react, the resulting solution is

Accepted Answer

A)  acidic. 
B)  basic. 
C)  neutral. 
D)  pure water. 
A)  acidic. 
B)  basic. 
C)  neutral. 
D)  pure water.

Question 14

Ocean water is acidic mainly because of

Accepted Answer

A)  dissolved carbon dioxide 
B)  its salt content 
C)  pollution by agricultural chemicals 
D)  pollution by industrial chemicals 
A)  dissolved carbon dioxide 
B)  its salt content 
C)  pollution by agricultural chemicals 
D)  pollution by industrial chemicals

Question 15

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 16

Which of the following has the lowest pH?

Accepted Answer

A)  pure water. 
B)  concentrated sugar solution. 
C)  concentrated sodium hydroxide solution. 
D)  gastric fluid. 
A)  pure water. 
B)  concentrated sugar solution. 
C)  concentrated sodium hydroxide solution. 
D)  gastric fluid.

Question 17

All forms of solid carbon

Accepted Answer

A)  are amorphous. 
B)  are crystalline. 
C)  are held together only by covalent bonds. 
D)  conduct electricity well. 
A)  are amorphous. 
B)  are crystalline. 
C)  are held together only by covalent bonds. 
D)  conduct electricity well.

Question 18

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 19

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 20

Acids do not

Accepted Answer

A)  neutralize bases. 
B)  taste sour. 
C)  combine with active metals to give off H2. 
D)  liberate OH- ions when dissolved in water. 
A)  neutralize bases. 
B)  taste sour. 
C)  combine with active metals to give off H2. 
D)  liberate OH- ions when dissolved in water.

An insoluble solid that results from a chemical reaction is called

Pure water is not

An example of a weak acid is

Most solids are

An example of a molecular solid is

An amorphous solid

The extremely strong material called graphene

A solution of table salt, NaCl, in water is

The chloride ion Cl^- is

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

The formula for ironII) hydroxide is

An emulsion in which tiny oil droplets are dispersed in water is an example of

When equivalent amounts of a strong acid and a strong base react, the resulting solution is

Ocean water is acidic mainly because of

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

Which of the following has the lowest pH?

All forms of solid carbon

Bases do not

At room temperature and atmospheric pressure, ammonia is a

Acids do not

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

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Exam 11: Crystals, Ions, and Solutions

An insoluble solid that results from a chemical reaction is called

Pure water is not

An example of a weak acid is

Most solids are

An example of a molecular solid is

An amorphous solid

The extremely strong material called graphene

A solution of table salt, NaCl, in water is

The chloride ion Cl- is

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

The formula for ironII) hydroxide is

An emulsion in which tiny oil droplets are dispersed in water is an example of

When equivalent amounts of a strong acid and a strong base react, the resulting solution is

Ocean water is acidic mainly because of

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

Which of the following has the lowest pH?

All forms of solid carbon

Bases do not

At room temperature and atmospheric pressure, ammonia is a

Acids do not

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 Galaxies

Filters

The chloride ion Cl^- is