CHEM111- General Chemistry Multiple-Choice
Questions
Chapters 1–6, 7 (Selected), and 9
1. Which of the following is a chemical property?
(a) Density
(b) Color
(c) Reactivity
(d) Boiling point
2. Which of the following represents the largest mass?
(a) 0.0005 kg
(b) 500 mg
(c) 5 g
(d) 5 × 10−6 kg
3. How many significant figures are in the number 0.003040?
(a) 3
(b) 4
(c) 5
(d) 6
4. A sample’s mass is 12.50 g and its volume is 4.62 mL. What is its density?
(a) 2.50 g/mL
(b) 2.71 g/mL
(c) 3.04 g/mL
(d) 2.45 g/mL
5. Which of the following is a heterogeneous mixture?
(a) Air
(b) Saltwater
(c) Brass
(d) Sand in water
6. A physical change is occurring in which process?
(a) Rusting of iron
1
, (b) Burning of natural gas
(c) Dissolving sugar in water
(d) Tarnishing of silver
7. A measurement of 25.40 cm is precise because it:
(a) Is close to the true value
(b) Has many significant digits
(c) Was measured with a large instrument
(d) Is an average of many trials
8. Which is the correct SI unit for mass?
(a) Gram
(b) Pound
(c) Kilogram
(d) Milligram
9. Convert 4.5 hours to seconds.
(a) 1.6 × 104
(b) 2.3 × 103
(c) 4.5 × 103
(d) 3.6 × 104
10. Which of the following is an example of a compound?
(a) Air
(b) Iron
(c) Sodium chloride
(d) Granite
11. Which particle has a charge of +1?
(a) Electron
(b) Proton
(c) Neutron
(d) Alpha particle
12. Isotopes of an element differ in their:
(a) Number of protons
(b) Number of electrons
2
Questions
Chapters 1–6, 7 (Selected), and 9
1. Which of the following is a chemical property?
(a) Density
(b) Color
(c) Reactivity
(d) Boiling point
2. Which of the following represents the largest mass?
(a) 0.0005 kg
(b) 500 mg
(c) 5 g
(d) 5 × 10−6 kg
3. How many significant figures are in the number 0.003040?
(a) 3
(b) 4
(c) 5
(d) 6
4. A sample’s mass is 12.50 g and its volume is 4.62 mL. What is its density?
(a) 2.50 g/mL
(b) 2.71 g/mL
(c) 3.04 g/mL
(d) 2.45 g/mL
5. Which of the following is a heterogeneous mixture?
(a) Air
(b) Saltwater
(c) Brass
(d) Sand in water
6. A physical change is occurring in which process?
(a) Rusting of iron
1
, (b) Burning of natural gas
(c) Dissolving sugar in water
(d) Tarnishing of silver
7. A measurement of 25.40 cm is precise because it:
(a) Is close to the true value
(b) Has many significant digits
(c) Was measured with a large instrument
(d) Is an average of many trials
8. Which is the correct SI unit for mass?
(a) Gram
(b) Pound
(c) Kilogram
(d) Milligram
9. Convert 4.5 hours to seconds.
(a) 1.6 × 104
(b) 2.3 × 103
(c) 4.5 × 103
(d) 3.6 × 104
10. Which of the following is an example of a compound?
(a) Air
(b) Iron
(c) Sodium chloride
(d) Granite
11. Which particle has a charge of +1?
(a) Electron
(b) Proton
(c) Neutron
(d) Alpha particle
12. Isotopes of an element differ in their:
(a) Number of protons
(b) Number of electrons
2
