Chapter 7 Review

1.

1 point

Which of the following bonds is longest?

single bond

double bond

triple bond

it is impossible to determine

2.

1 point

Which of the following bonds is weakest?

single bond

double bond

triple bond

it is impossible to determine

3.

1 point

What kind of compound is NaCl?

nonpolar covalent

polar covalent

ionic

nonpolar ionic

4.

1 point

What type of compound is HF?

nonpolar covalent

polar covalent

ionic

nonpolar ionic

5.

1 point

If the following choices represent chemical formulas for ethane (which contains 2 carbons and 6 hydrogens), which one is the molecular formula?

CH3

C2H6

CH3CH3

none of the above

6.

1 point

Which of the following is the chemical formula for the ionic compound iron (III) oxide?

Fe2O2

FeO

Fe2O3

Fe3O2

7.

1 point

Which of the following is the chemical formula for copper (II) sulfate pentahydrate?

Cu2SO4*5H2O

CuSO4*5H2O

Cu(II)SO4*5H2O

Cu(SO4)2*5H2O

8.

1 point

What is the chemical formula for the molecular compound dinitrogen tetroxide?

NO2

N2O2

N2O3

none of the above

9.

1 point

What is the chemical formula for the molecular compound nitrogen monoxide?

NO

N2O

N2O2

none of the above

10.

1 point

What is the name of the ionic compound MgO?

magnesium monoxide

magnesium oxide

magnesium (II) oxide

none of the above

11.

1 point

What is the name of the molecular compound CCl4?

carbon (IV) chloride

monocarbon chloride

monocarbon trichloride

carbon tetrachloride

12.

1 point

How many covalent bonds are there between the carbon atoms in a molecule of C2H2?

one

two

three

it is impossible to determine

13.

1 point

How many nonbonding pairs of electrons are there in the dot diagram for NH3?

one

two

three

four

14.

1 point

Which of the following statements is true of the molecule HCl?

the hydrogen atom has a partial negative charge

the chlorine atom has a partial negative charge

the atoms share electrons equally

none of the above

15.

1 point

Which of the following statements is true?

in ionic bonds, metals usually give up electrons to nonmetals

in ionic bonds, nonmetals usually give up protons to metals

in ionic bonds, nonmetals usually give up electrons to metals

in ionic bonds, electrons are shared

16.

1 point

What is the main characteristic of ionic bonds?

electrons are shared equally between the atoms in the bond

electrons are shared unequally between the atoms in the bond

electrons are transferred between the atoms in the bond

none of the above

17.

1 point

Which of the following properties are exhibited by ionic compounds?

they have low melting points

they don't conduct electricity in solution

they don't conduct electricity when they are in liquid form

none of the above

18.

1 point

Which of the following is a characteristic of an ionic compound?

they have a crystal structure

they have high melting points

they conduct electricity in solution

all of the above

19.

1 point

Which of the following has a double bond?

Cl2

O2

F2

N2

20.

1 point

What is the name of the molecular compound NH3?

nitrogen trihydride

nitrogen (III) hydride

nitrogen hydride

ammonia