Question 1

What is the formula of a compound formed from the ions M3+ and X3-?

Accepted Answer

A)   M2X
B)   MX
C)   M2X3
D)   MX2E) C) and D)
F) B) and C)

Question 2

A compound consists of only magnesium, carbon, and oxygen. If the percentage by mass of Mg is 63.9% and that of C is 12.2%, what is the percentage by mass of O?

Accepted Answer

A)   76.1%
B)   23.9%
C)   51.7%
D)   70.9%
E)   None of the aboveF) A) and B)
G) A) and C)

Question 3

A(n) ______________ covalent bond is one in which the electrons are shared unequally.

Accepted Answer

The answer of A(n) ______________ covalent bond is one in...

Question 4

Ice is less dense than liquid water because of ______________ bonding.

Accepted Answer

The answer of Ice is less dense than liquid water...

Question 5

What electric charge is characteristic for an ion of Cl?

Accepted Answer

A)   7+
B)   0
C)   1-
D)   1+E) C) and D)
F) B) and D)

Question 6

Draw the Lewis structure for Freon-12, CF2Cl2.

Accepted Answer

Question 7

When atoms unite by transferring electrons, they should form

Accepted Answer

A)   a polar molecule.
B)   a covalent compound.
C)   an ionic compound.
D)   an organic compound.E) A) and C)
F) B) and C)

Question 8

Which of the following was not a part of Dalton's atomic theory?

Accepted Answer

A)   Each element is composed of atoms, which are identical for that element.
B)   The reactivity of elements involves changes in their electron configuration.
C)   Chemical combination is the bonding of a definite number of atoms of each of the combining elements.
D)   No atoms are gained, lost, or changed in identity during a chemical reaction.E) A) and C)
F) B) and C)

Question 9

Which of the following ions is isoelectronic with a neon atom?

Accepted Answer

A)   N3-
B)   Li+
C)   Cl-
D)   F2-E) A) and B)
F) A) and C)

Question 10

What is the formula of a compound formed from the ions M1+ and X1-?

Accepted Answer

A)   M2X
B)   MX
C)   M2X2
D)   MX2E) None of the above
F) All of the above

Question 11

When sodium and chlorine react to form sodium chloride, an ionic compound,

Accepted Answer

A)   each sodium atom gains two electrons.
B)   each sodium atom gains one electron.
C)   each chlorine atom gains one electron.
D)   each chlorine atom gains two electrons.E) A) and B)
F) A) and C)

Question 12

The statement "Different samples of a pure compound always contain the same elements in the same proportion by mass" is known as the law of ______________.

Accepted Answer

definite p...

Question 13

The anion in the common ionic substance NaHCO3 is

Accepted Answer

A)   CO32-.
B)   H+.
C)   Na+.
D)   HCO3-.E) B) and C)
F) A) and B)

Question 14

Which pair of elements is least likely to form an ionic bond?

Accepted Answer

A)   K and H
B)   Al and F
C)   N and Cl
D)   S and SrE) A) and B)
F) A) and C)

Question 15

Mn is a transition element and can form several ions. Its ionic charge in MnF3 must be ______________.

Accepted Answer

Question 16

If atoms unite by transfer of electrons, they form

Accepted Answer

A)   an organic compound.
B)   an ionic compound.
C)   a polar molecule.
D)   a covalent compound.E) All of the above
F) None of the above

Question 17

A methane molecule is

Accepted Answer

A)   flat and polar.
B)   flat and nonpolar.
C)   tetrahedral and nonpolar.
D)   pyramidal and polar.E) None of the above
F) B) and C)

Question 18

Element A, mass 5.00 g, reacts exactly with 2.00 g of element B to form 7.00 g of compound AB. If 10.00 g of element A are reacted with 2.00 g of element B to form the same compound, what mass of compound AB will be formed?

Accepted Answer

A)   7.00 g
B)   5.00 g
C)   17.00 g
D)   12.00 gE) A) and C)
F) A) and B)

Question 19

When forming ionic compounds, atoms ______________ electrons.

Accepted Answer

The answer of When forming ionic compounds, atoms ______________ electrons....

Question 20

A general principle of ionic compound formation is that the total ionic charge in the formula unit must be

Accepted Answer

A)   0.
B)   no greater than that of the metal ion.
C)   between +4 and -4.
D)   no less than that of the nonmetal ion.E) All of the above
F) B) and C)

Exam 12: Chemical Bonding

Ice is less dense than liquid water because of ______________ bonding.

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A methane molecule is

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A general principle of ionic compound formation is that the total ionic charge in the formula unit must be

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The statement "Different samples of a pure compound always contain the same elements in the same proportion by mass" is known as the law of ______________.

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What is the formula of a compound formed from the ions M3+ and X3-?

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What is the formula of a compound formed from the ions M1+ and X1-?

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Draw the Lewis structure for Freon-12, CF2Cl2.

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What electric charge is characteristic for an ion of Cl?

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Element A, mass 5.00 g, reacts exactly with 2.00 g of element B to form 7.00 g of compound AB. If 10.00 g of element A are reacted with 2.00 g of element B to form the same compound, what mass of compound AB will be formed?

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If atoms unite by transfer of electrons, they form

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A compound consists of only magnesium, carbon, and oxygen. If the percentage by mass of Mg is 63.9% and that of C is 12.2%, what is the percentage by mass of O?

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When atoms unite by transferring electrons, they should form

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Which of the following was not a part of Dalton's atomic theory?

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Which of the following ions is isoelectronic with a neon atom?

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Which pair of elements is least likely to form an ionic bond?

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The anion in the common ionic substance NaHCO3 is

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Mn is a transition element and can form several ions. Its ionic charge in MnF3 must be ______________.

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When forming ionic compounds, atoms ______________ electrons.

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When sodium and chlorine react to form sodium chloride, an ionic compound,

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A(n) ______________ covalent bond is one in which the electrons are shared unequally.

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What is the formula of a compound formed from the ions M³⁺ and X^3-?

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What is the formula of a compound formed from the ions M¹⁺ and X^1-?

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Draw the Lewis structure for Freon-12, CF₂Cl₂.

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The anion in the common ionic substance NaHCO₃ is

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Mn is a transition element and can form several ions. Its ionic charge in MnF₃ must be ______________.

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