Name
_
Class
Date
_
Chemical Names
and Formulas
DIRECTIONS: Write on the line at the right of each statement the letter preceding the word or expression that best
completes the statement.
1. A chemical formula includes the symbols of the elements in the compound and subscripts that
indicate (a) the number of moles of each element; (b) how many atoms or ions of each type are
combined in the simplest unit; (c) the formula mass; (d) the charges on the elements or ions.
1
2. A chemical formula for a molecular compound represents the composition of (a) a molecule;
(b) an atom; (c) the ions that make up the compound; (d) the crystal lattice.
2
3. All of the following are polyatomic ions EXCEPT the (a) hydrogen sulfate ion; (b) sulfate ion;
(c) sulfite ion; (d) sulfide ion.
3
4. What is the name in the old system of the copper(I) ion in a compound name? (a) copper
(b) cuprous (c) cupric (d) chromic
4
5. Name the compound Pb(II)O, using the Stock system. (a) plumbous oxide (b) lead oxide
(c) potassium oxide (d) lead(II) oxide
5
6. What is the name of the compound Ni(Cl03h? (a) nickel chlorate (b) nickel chloride
(c) nickel chlorite (d) nickel peroxide
6
DIRECTIONS: Write on the line at the right of each statement the word or expression that best completes the
meaning when substituted for the corresponding number.
7. There are ~
.-----
7
atoms of fluorine present in a molecule of carbon tetrafluoride.
8. The formula ----.iliL represents zinc fluoride.
8
9. The ion of iron called ferrous in the old system would be written in a compound name as
~
in the Stock system.
9
DIRECTIONS: Complete the following table.
Formula
Name
monoxide
CF4
nitrogen
hydrofluoric
trifluoride
acid
10. Si02
H2SO4
10
11.
11
12.
12
13.
13
14.
14
15.
15
Section 7.1
Chemical Names and Formulas
HRW material
copyrighted
under
notice appearing
earlier
in this work.
23
Name
_
Class
Date
Oxidation Numbers
_
Sec~on
RevIew
7.2
•
DIRECTIONS: Write on the line at the right of each statement the letter preceding the word or expression that best
completes the statement.
1. The oxidation number of fluorine is (a) always 0; (b) -1 in all compounds;
(c) + 1 in all compounds; (d) equal to the positive charge of all the metal ions in a compound.
2. The oxidation number of oxygen in most compounds is (a) - 8; (b) - 2; (c) 0; (d)
3. What is the oxidation number of an uncombined element? (a) -1 (b) 0 (c)
1
+ 1.
2
3
+ 1 (d) 8
4. In a compound, the algebraic sum of the oxidation numbers of all atoms equals (a) 0; (b) 1;
(c) 8; (d) the charge on the compound.
5. The oxidation number of hydrogen in compounds containing metals is (a) -1; (b) 0; (c)
(d) equal to the charge on the metal ion.
DIRECTIONS:
4
+ 1;
5
Complete the following table.
Element
H202
KH
CI4 Oxidation Number
H2O
AIF3
Compound
6.
6
7.
7
8.
8
9.
9
10.
10
DIRECTIONS:
11.
Write the names to the following compounds on the lines provided. Use the Stock system.
N20
11
12. S02
12
13. CCl4
13
14.
PF3
14
15. H20 ---
15
24
Section 7.2
Oxidation Numbers
HRW material
copyrighted
under
notice appearing
earlier
in this work