Chemistry Study Guide
1. Which of the following polyatomic ions have a 3-ionic charge?
a. Phosphate
b. Hydrogen carbonate
c. Sulfate
d. Hydroxide
e. Nitrate
2. In which of the following is the metric unit paired with its correct abbreviation?
a. Centimeter/km
b. Kilogram/cg
c. Millimeter/mL
d. Microgram/mg
e. Gram/gm
3. The number of electrons in an ion with 20 protons and an ionic charge of 2- is?
a. 22
b. 18
c. 20
d. 16
e. 24
4. Which of the following is a measurement of mass in the metric system?
a. Meter
b. Centimeter
c. Millimeter
d. Celsius
e. Kilogram
5. A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is?
a. 1.6mg
b. 53 mg
c. 5.0 mg
d. 19 mg Correct answer. 1 lb = .453592 kg / 8.5*.453592 = 3.855532 kg
e. .59 mg 3.855532 * 5 = 19.3 mg
6. Identify the formula of the ionic compound containing Mg2+ and S2-
a. none of the above
b. Mg2S
c. Mg2S4
d. Mg2S2
e. MgS2
7. Identify the formula of the ionic compound containing Ag+ and SO32
a. Ag(SO3)2
b. Ag2(SO3)2
c. AgSO3
d. None of the above
e. Ag2SO3
8. What is the answer, with the correct number of decimal places, for this problem?
4.392g + 102.40g +2.51g =
a. 109.30 g
b. 110 g
c. 109 g
d. 109.3 g
e. 109.302 g
9. A calculator answer of 423.6059 must be rounded off to 3 significant figures. What answer is reported?
a. 420
b. 424
c. 423.7
d. 423
e. 423.6
10. Double and triple bonds form because
a. The atoms involved have high electronegativities
b. Single covalent bonds do not give all the atoms in the molecule 8 valence electrons
c. One of the atoms in the molecule has more than 8 valence electrons
d. The ions involved have charges larger than 1
e. There is at least 1 hydrogen atom involved in the bond
11. Expressing the answer in scientific notation with proper significant figures, how many
a. Phosphate
b. Hydrogen carbonate
c. Sulfate
d. Hydroxide
e. Nitrate
2. In which of the following is the metric unit paired with its correct abbreviation?
a. Centimeter/km
b. Kilogram/cg
c. Millimeter/mL
d. Microgram/mg
e. Gram/gm
3. The number of electrons in an ion with 20 protons and an ionic charge of 2- is?
a. 22
b. 18
c. 20
d. 16
e. 24
4. Which of the following is a measurement of mass in the metric system?
a. Meter
b. Centimeter
c. Millimeter
d. Celsius
e. Kilogram
5. A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is?
a. 1.6mg
b. 53 mg
c. 5.0 mg
d. 19 mg Correct answer. 1 lb = .453592 kg / 8.5*.453592 = 3.855532 kg
e. .59 mg 3.855532 * 5 = 19.3 mg
6. Identify the formula of the ionic compound containing Mg2+ and S2-
a. none of the above
b. Mg2S
c. Mg2S4
d. Mg2S2
e. MgS2
7. Identify the formula of the ionic compound containing Ag+ and SO32
a. Ag(SO3)2
b. Ag2(SO3)2
c. AgSO3
d. None of the above
e. Ag2SO3
8. What is the answer, with the correct number of decimal places, for this problem?
4.392g + 102.40g +2.51g =
a. 109.30 g
b. 110 g
c. 109 g
d. 109.3 g
e. 109.302 g
9. A calculator answer of 423.6059 must be rounded off to 3 significant figures. What answer is reported?
a. 420
b. 424
c. 423.7
d. 423
e. 423.6
10. Double and triple bonds form because
a. The atoms involved have high electronegativities
b. Single covalent bonds do not give all the atoms in the molecule 8 valence electrons
c. One of the atoms in the molecule has more than 8 valence electrons
d. The ions involved have charges larger than 1
e. There is at least 1 hydrogen atom involved in the bond
11. Expressing the answer in scientific notation with proper significant figures, how many