Mock Exam: Measurement, Units, and Calculations
Easy Questions
1. What is the SI unit for length?
a) Gram
b) Meter
c) Liter
d) Cubic meter
2. Which of the following is true about the Celsius temperature scale?
a) Freezing point of water is 32°C
b) Freezing point of water is 0°C
c) Boiling point of water is 100°F
d) 0°C is the freezing point of mercury
3. Which of these numbers is in scientific notation?
a) 1250
b) 1.25 × 10^3
c) 0.125
d) 1250 × 10^3
M
4. Which of the following is an exact number?
a) 1 inch = 2.54 cm
b) 1 liter = 1000 milliliters
AG
c) 3.14
d) 9.8 m/s²
5. What is the unit of mass in the metric system?
a) Gram
b) Liter
c) Meter
d) Kilogram
Medium Questions
6. What happens to the number of significant figures when you multiply 4.56 (3 sig.
figs.) by 2.1 (2 sig. figs.)?
a) 4
b) 3
c) 2
d) 1
7. What is the main factor that affects the number of significant figures in the result
of a calculation?
a) The size of the numbers
b) The precision of the measurement
c) The rounding rules
d) The order of operations
, 8. Which of the following units is used for the density of solids?
a) g/mL
b) g/cm³
c) kg/m³
d) g/L
9. Which of these prefixes means one thousandth (1/1000)?
a) Kilo-
b) Centi-
c) Milli-
d) Deci-
10. In the conversion factor 1 inch = 2.54 cm, which number has an unlimited number
of significant figures?
a) 2.54
b) 1
c) Inch
M
d) Centimeter
Hard Questions
11. If you move the decimal point in 0.0056 to make it 5.6 × 10^-3, what is the
exponent?
a) 3
b) -3
c) 6
AG
d) -6
12. What is the specific heat formula for heat transfer?
a) Q = mcΔT
b) Q = mΔT
c) ΔT = Qmc
d) C = mΔQ
13. What is the density of a 20 g object that displaces 10 mL of water?
a) 2 g/mL
b) 0.5 g/mL
c) 20 g/mL
d) 10 g/mL
14. What happens when a substance’s density is greater than the fluid it is in?
a) It floats
b) It sinks
c) It dissolves
d) It evaporates
15. Which unit is used to measure liquid volume?
a) Meter
b) Cubic meter
c) Milliliter
d) Kilogram
Easy Questions
1. What is the SI unit for length?
a) Gram
b) Meter
c) Liter
d) Cubic meter
2. Which of the following is true about the Celsius temperature scale?
a) Freezing point of water is 32°C
b) Freezing point of water is 0°C
c) Boiling point of water is 100°F
d) 0°C is the freezing point of mercury
3. Which of these numbers is in scientific notation?
a) 1250
b) 1.25 × 10^3
c) 0.125
d) 1250 × 10^3
M
4. Which of the following is an exact number?
a) 1 inch = 2.54 cm
b) 1 liter = 1000 milliliters
AG
c) 3.14
d) 9.8 m/s²
5. What is the unit of mass in the metric system?
a) Gram
b) Liter
c) Meter
d) Kilogram
Medium Questions
6. What happens to the number of significant figures when you multiply 4.56 (3 sig.
figs.) by 2.1 (2 sig. figs.)?
a) 4
b) 3
c) 2
d) 1
7. What is the main factor that affects the number of significant figures in the result
of a calculation?
a) The size of the numbers
b) The precision of the measurement
c) The rounding rules
d) The order of operations
, 8. Which of the following units is used for the density of solids?
a) g/mL
b) g/cm³
c) kg/m³
d) g/L
9. Which of these prefixes means one thousandth (1/1000)?
a) Kilo-
b) Centi-
c) Milli-
d) Deci-
10. In the conversion factor 1 inch = 2.54 cm, which number has an unlimited number
of significant figures?
a) 2.54
b) 1
c) Inch
M
d) Centimeter
Hard Questions
11. If you move the decimal point in 0.0056 to make it 5.6 × 10^-3, what is the
exponent?
a) 3
b) -3
c) 6
AG
d) -6
12. What is the specific heat formula for heat transfer?
a) Q = mcΔT
b) Q = mΔT
c) ΔT = Qmc
d) C = mΔQ
13. What is the density of a 20 g object that displaces 10 mL of water?
a) 2 g/mL
b) 0.5 g/mL
c) 20 g/mL
d) 10 g/mL
14. What happens when a substance’s density is greater than the fluid it is in?
a) It floats
b) It sinks
c) It dissolves
d) It evaporates
15. Which unit is used to measure liquid volume?
a) Meter
b) Cubic meter
c) Milliliter
d) Kilogram
