Question 1

The elements with the highest ionization energies are the

Accepted Answer

A)   alkali metals
B)   halogens
C)   inert gases
D)   rare earthsE) None of the above
F) A) and D)

Question 2

The missing number in the equation 2CaNO3) 2 → 2CaO + [ ]NO2 + O2 is

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   4.E) A) and B)
F) A) and C)

Question 3

At room temperature, bromine is a

Accepted Answer

A)   colorless gas.
B)   greenish-yellow gas.
C)   reddish-brown liquid.
D)   steel-gray solid.E) A) and B)
F) B) and D)

Question 4

The most active of the following metals is

Accepted Answer

A)   silver.
B)   potassium.
C)   zinc.
D)   copper.E) C) and D)
F) None of the above

Question 5

Known elements have atomic numbers up to

Accepted Answer

A)   92
B)   100
C)   118
D)   150E) B) and D)
F) A) and B)

Question 6

An atom whose outer electron shell is filled is

Accepted Answer

A)   a halogen.
B)   an active metal.
C)   an inactive metal.
D)   an inert gas.E) A) and B)
F) A) and C)

Question 7

A horizontal row in the periodic table is called a

Accepted Answer

A)   shell.
B)   subshell.
C)   group.
D)   period.E) All of the above
F) A) and B)

Question 8

The ion of the hydroxide group has the symbol

Accepted Answer

A)   OH.
B)   OH+.
C)   OH-.
D)   H2O-.E) B) and C)
F) A) and D)

Question 9

Each electron shell in an atom contains

Accepted Answer

A)   the same number of electrons as all its other shells.
B)   electrons whose energies are exactly the same.
C)   electrons with the same principal quantum number n.
D)   electrons with the same probability clouds.E) A) and D)
F) C) and D)

Question 10

The electrolysis of water is an example of a

Accepted Answer

A)   combination reaction.
B)   decomposition reaction.
C)   single displacement reaction.
D)   double displacement reaction.E) None of the above
F) C) and D)

Question 11

Of the halogens, at room temperature and atmospheric pressure

Accepted Answer

A)   all are gases.
B)   one is a gas and the others are liquids.
C)   one is a gas and the others are solids.
D)   one is a liquid and the others are gases or solids.E) C) and D)
F) A) and D)

Question 12

A compound whose name ends in -ate always contains

Accepted Answer

A)   hydrogen.
B)   oxygen.
C)   one or more hydroxide groups.
D)   only two elements.E) A) and B)
F) B) and C)

Question 13

In a covalent compound

Accepted Answer

A)   electrons are shifted from one atom to another.
B)   only atoms of the same element are present.
C)   there must be at least one carbon atom.
D)   adjacent atoms share electron pairs.E) A) and C)
F) None of the above

Question 14

The number of units of NaOH needed to react with 1 unit of H3PO4 to form Na3PO4 and H2O is

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   4.E) B) and C)
F) A) and B)

Question 15

The charge on halogen ions is

Accepted Answer

A)   +1.
B)   +2.
C)   -1.
D)   -2.E) A) and C)
F) B) and D)

Question 16

An element that can form an ionic compound with oxygen is

Accepted Answer

A)   carbon.
B)   calcium.
C)   nitrogen.
D)   neon.E) C) and D)
F) A) and B)

Question 17

The nitrate ion has the formula NO3-. The formula of mercuryII)  nitrate is

Accepted Answer

A)   HgNO3.
B)   Hg2NO3.
C)   HgNO3) 2.
D)   Hg2NO3) 2.E) None of the above
F) A) and B)

Question 18

The metals most difficult to extract from their ores in general

Accepted Answer

A)   are the least active chemically.
B)   are the most active chemically.
C)   have the lowest atomic numbers.
D)   have the highest atomic numbers.E) None of the above
F) B) and C)

Question 19

Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,

Accepted Answer

A)   identical.
B)   similar.
C)   different.
D)   sometimes similar and sometimes different.E) B) and C)
F) C) and D)

Question 20

The statement that the elements in a given compound are always combined in the same proportions by mass is known as

Accepted Answer

A)   the periodic law.
B)   the law of definite proportions.
C)   the law of conservation of mass.
D)   Dalton's law.E) A) and C)
F) B) and C)

Exam 10: The Periodic Law

Each electron shell in an atom contains

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The statement that the elements in a given compound are always combined in the same proportions by mass is known as

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A compound whose name ends in -ate always contains

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In a covalent compound

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The most active of the following metals is

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The nitrate ion has the formula NO3-. The formula of mercuryII) nitrate is

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Of the halogens, at room temperature and atmospheric pressure

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The elements with the highest ionization energies are the

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The electrolysis of water is an example of a

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The charge on halogen ions is

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A horizontal row in the periodic table is called a

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The number of units of NaOH needed to react with 1 unit of H3PO4 to form Na3PO4 and H2O is

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An atom whose outer electron shell is filled is

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The ion of the hydroxide group has the symbol

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Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,

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The metals most difficult to extract from their ores in general

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The missing number in the equation 2CaNO3) 2 → 2CaO + [ ]NO2 + O2 is

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At room temperature, bromine is a

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Known elements have atomic numbers up to

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An element that can form an ionic compound with oxygen is

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The nitrate ion has the formula NO₃^-. The formula of mercuryII) nitrate is

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The number of units of NaOH needed to react with 1 unit of H₃PO₄ to form Na₃PO₄ and H₂O is

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The missing number in the equation 2CaNO₃) ₂ → 2CaO + [ ]NO₂ + O₂ is

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