Question 1

The nature of bonding forces in matter influences which of the following observable properties of the matter?

Accepted Answer

A)   the optical property
B)   the state of the matter at room temperature
C)   the strength and rigidity
D)   all of the aboveE) None of the above
F) A) and D)

Question 2

Which of the following elements has the highest electronegativity?

Accepted Answer

A)   O
B)   H
C)   Cl
D)   FE) None of the above
F) A) and C)

Question 3

________ is the measure of the tendency of an atom in a molecule to attract a shared pair of electrons to itself.

Accepted Answer

A)   Ionization
B)   Electronegativity
C)   Polarity
D)   PrecipitationE) None of the above
F) All of the above

Question 4

Water is the common name for which molecule?

Accepted Answer

A)   H2O
B)   HO2
C)   HO
D)   H2O2E) None of the above
F) All of the above

Question 5

All electrons around a central atom are in bonding pairs.

Accepted Answer

A) True 
 B)False

Question 6

In reactions to form ionic compounds, metals generally

Accepted Answer

A)   lose electrons.
B)   gain electrons.
C)   become non-metals.
D)   do not react.E) B) and D)
F) B) and C)

Question 7

When a fluorine atom reacts with a chlorine atom, the bond that forms between them should be

Accepted Answer

A)   ionic.
B)   polar covalent.
C)   nonpolar covalent.
D)   ionic covalent.E) A) and D)
F) C) and D)

Question 8

When ions arrange themselves in an orderly structure, that structure is known as a

Accepted Answer

A)   crystal.
B)   dipole.
C)   molecule.
D)   tetrahedron.E) A) and C)
F) A) and B)

Question 9

When calcium reacts with iodine, calcium ions, Ca2+, and iodide ions, I-, are formed. In this reaction, calcium atoms

Accepted Answer

A)   lose electrons.
B)   gain electrons.
C)   lose protons.
D)   gain protons.E) A) and C)
F) All of the above

Question 10

Which pair of atoms would form an ionic bond?

Accepted Answer

A)   Na and Mg
B)   Ca and S
C)   Cl and Br
D)   N and NE) A) and B)
F) None of the above

Question 11

When sodium and chlorine react to form sodium chloride, sodium and chlorine ________ are changed into sodium and chloride ________.

Accepted Answer

The answer of When sodium and chlorine react to form...

Question 12

Which of the following molecules is polar?

Accepted Answer

A)   O2
B)   CCl4
C)   CH2Cl2
D)   CO2E) B) and D)
F) None of the above

Question 13

The formula for the compound calcium bromide is

Accepted Answer

A)   CaBr.
B)   Ca2Br.
C)   CaBr2.
D)   Ca3Br2.E) A) and B)
F) A) and C)

Question 14

The inertness of the noble gases is due to

Accepted Answer

A)   the outermost shell has six electrons.
B)   the number of protons and neutrons.
C)   the bonds they form with other elements.
D)   the outermost shell has an octet of electrons, except for helium which has two electrons.E) A) and B)
F) C) and D)

Question 15

When two chlorine atoms combine with each other, the bond that forms is

Accepted Answer

A)   ionic.
B)   polar covalent.
C)   nonpolar covalent.
D)   ionic covalent.E) A) and C)
F) C) and D)

Question 16

The attraction between positive and negative ions is known as a(n)

Accepted Answer

A)   covalent bond.
B)   crystal bond.
C)   ionic bond.
D)   molecular bond.E) None of the above
F) A) and B)

Question 17

In a polar covalent bond, electrons are

Accepted Answer

A)   shared equally.
B)   shared unequally.
C)   transferred.
D)   uncharged.E) C) and D)
F) B) and D)

Question 18

In a Lewis formula, the dots represent

Accepted Answer

A)   all the electrons in the atoms.
B)   the valence electrons in all the atoms.
C)   only the electrons that are being transferred or shared.
D)   whatever number of electrons are needed to satisfy the octet rule.E) A) and B)
F) A) and D)

Question 19

The formula of sodium chromate is

Accepted Answer

A)   NaCrO4.
B)   Na2Cr.
C)   Na2CrO4.
D)   Na3(CrO4) 2.E) B) and C)
F) A) and D)

Question 20

With respect to chemical bonding, which particles play the least active role?

Accepted Answer

A)   nucleons
B)   core electrons
C)   valence electrons
D)   All play equal roles.E) A) and B)
F) B) and C)

Exam 4: Chemical Bonds

The inertness of the noble gases is due to

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The nature of bonding forces in matter influences which of the following observable properties of the matter?

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The formula of sodium chromate is

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Which of the following elements has the highest electronegativity?

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Water is the common name for which molecule?

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In a polar covalent bond, electrons are

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Which pair of atoms would form an ionic bond?

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When calcium reacts with iodine, calcium ions, Ca2+, and iodide ions, I-, are formed. In this reaction, calcium atoms

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In a Lewis formula, the dots represent

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________ is the measure of the tendency of an atom in a molecule to attract a shared pair of electrons to itself.

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All electrons around a central atom are in bonding pairs.

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When a fluorine atom reacts with a chlorine atom, the bond that forms between them should be

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With respect to chemical bonding, which particles play the least active role?

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When two chlorine atoms combine with each other, the bond that forms is

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The formula for the compound calcium bromide is

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When sodium and chlorine react to form sodium chloride, sodium and chlorine ________ are changed into sodium and chloride ________.

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The attraction between positive and negative ions is known as a(n)

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When ions arrange themselves in an orderly structure, that structure is known as a

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In reactions to form ionic compounds, metals generally

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Which of the following molecules is polar?

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When calcium reacts with iodine, calcium ions, Ca²⁺, and iodide ions, I^-, are formed. In this reaction, calcium atoms

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When sodium and chlorine react to form sodium chloride, sodium and chlorine are changed into sodium and chloride .

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