Question 1

An example of a molecular solid is

Accepted Answer

A)   ice.
B)   diamond.
C)   table salt.
D)   tin.E) A) and B)
F) None of the above

Question 2

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.E) A) and C)
F) A) and B)

Question 3

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.E) A) and B)
F) C) and D)

Question 4

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.E) All of the above
F) A) and B)

Question 5

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.E) A) and D)
F) A) and B)

Question 6

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.E) A) and D)
F) All of the above D

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.E) All of the above
F) C) and D)

Question 8

An example of a weak acid is

Accepted Answer

A)   nitric acid.
B)   acetic acid.
C)   sulfuric acid.
D)   hydrochloric acid.E) A) and B)
F) None of the above B

Question 9

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.E) A) and C)
F) All of the above

Question 10

Pure water is not

Accepted Answer

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

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.E) A) and B)
F) All of the above

Question 12

Most solids are

Accepted Answer

A)   amorphous.
B)   crystalline.
C)   covalent.
D)   polar.E) A) and C)
F) All of the above

Question 13

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 chemicalsE) All of the above
F) C) and D)

Question 14

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.E) B) and D)
F) B) and C)

Question 15

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.E) A) and D)
F) C) and D)

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.E) None of the above
F) B) and C)

Question 17

The formula for ironII)  hydroxide is

Accepted Answer

A)   FeOH.
B)   Fe2OH.
C)   FeOH) 2.
D)   Fe2OH) 2.E) A) and D)
F) A) and C)

Question 18

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.E) A) and D)
F) B) and D)

Question 19

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.E) A) and B)
F) A) and C)

Question 20

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.E) C) and D)
F) A) and B)

Exam 11: Crystals, Ions, and Solutions

An example of a molecular solid is

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

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Acids do not

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All forms of solid carbon

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At room temperature and atmospheric pressure, ammonia is a

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An insoluble solid that results from a chemical reaction is called

Correct AnswerverifiedD

The extremely strong material called graphene

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An example of a weak acid is

Correct AnswerverifiedB

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

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Pure water is not

Correct AnswerverifiedD

Bases do not

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Most solids are

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Ocean water is acidic mainly because of

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

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

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Which of the following has the lowest pH?

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The formula for ironII) hydroxide is

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A solution of table salt, NaCl, in water is

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The chloride ion Cl- is

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An amorphous solid

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D

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B

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D

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The chloride ion Cl^- is

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