Chemistry Notes

Chapter 6 practice

MULTIPLE CHOICE

1. The formula for acetic acid, CH3CO2H, is an example of a(n)
a.|condensed formula.|
b.|mathematical formula.|
c.|structural formula.|
d.|molecular formula.|

ANS: A
OBJ: Goal #3.1: Interpret, predict, and write formulas for ionic and molecular compounds

3. Which of the following statements are correct?

1.|Metals generally lose electrons to become cations.|
2.|Nonmetals generally gain electrons to become anions.|
3.|Group 2A metals form ions with a 2+ charge.|

a.|1 only|
b.|2 only|
c.|3 only|
d.|1,2, and 3|

ANS: D
OBJ: Goal #3.1: Interpret, predict, and write formulas for ionic and molecular compounds

5. What charge is most commonly observed for an oxide ion?
a.|3-|
b.|2-|
c.|1-|
d.|1+|

ANS: B
OBJ: Goal #3.1: Interpret, predict, and write formulas for ionic and molecular compounds

7. What is the formula for magnesium oxide?
a.|MgO|
b.|Mg2O|
c.|MgO2|
d.|Mg2O3|

ANS: A
OBJ: Goal #3.1: Interpret, predict, and write formulas for ionic and molecular compounds

8. What is the formula for aluminum chloride?
a.|AlCl|
b.|AlCl2|
c.|AlCl3|
d.|Al2Cl3|

ANS: C
OBJ: Goal #3.1: Interpret, predict, and write formulas for ionic and molecular compounds

10. What is the formula for lead(IV) sulfate?
a.|PbS|
b.|Pb(SO3)2|
c.|PbSO4|
d.|Pb(SO4)2|

ANS: D OBJ: Goal #3.2: Name compounds

11. What is the name of Mg(OH)2?
a.|magnesium oxide|
b.|magnesium dihydroxide|
c.|magnesium hydroxide|
d.|magnesium(II) hydroxide|

ANS: C OBJ: Goal #3.2: Name compounds

12. What is the name of KHCO3?
a.|hydrogen carbonate potassium ion|
b.|potassium hydrogen carbon trioxide|
c.|potassium bicarbonate|
d.|potassium hydrocarbonate|

ANS: C OBJ: Goal #3.2: Name compounds

14. What is the name of Cu2S?
a.|copper sulfide|
b.|copper(I) sulfide|
c.|copper(II) sulfide|
d.|dicopper sulfide|

ANS: B OBJ: Goal #3.2: Name compounds