Question 1

Which of the following is the correct SI base unit for measuring mass?

Accepted Answer

kilogram (kg)

Question 2

A scientist measures a distance as 5.57 x $$10^{-5}$$ meters. Which SI prefix multiplier is most appropriate for reporting this measurement?

Accepted Answer

micro

Question 3

Which of the following is a derived SI unit?

Accepted Answer

newton (N)

Question 4

A jeweler examines a 2.50 g ring. When submerged, the water level rises from 10.00 mL to 11.06 mL. What is the density of the ring?

Accepted Answer

Question 5

Which of the following conversions is correct?

Accepted Answer

1 meter = 1.09361 yards

Question 6

Which temperature scale is used in the SI system and what is its zero point?

Accepted Answer

Kelvin; 0 K is absolute zero

Question 7

A car travels 100 kilometers in 2 hours. What is its average speed in SI units?

Accepted Answer

$$13.89\ \mathrm{m/s}$$

Question 8

Which of the following is a correct relationship between volume units?

Accepted Answer

1 mL = 1 $$cm^3$$

Question 9

If a sample has a mass of 500 g and a volume of 250 mL, what is its density?

Accepted Answer

$$2.0\ \mathrm{g/mL}$$

Question 10

Which of the following is NOT an SI base unit?

Accepted Answer

liter (L)

Question 11

A force is measured as 10 newtons. Which combination of SI base units is equivalent to a newton?

Accepted Answer

$$\mathrm{kg} \cdot \mathrm{m/s^2$}$$

Question 12

Which of the following best describes the difference between mass and weight?

Accepted Answer

Mass is the amount of matter; weight is the force of gravity on that matter.

Question 13

A laboratory thermometer reads 37°C. What is this temperature in kelvin?

Accepted Answer

$$310.15\ \mathrm{K}$$

Question 14

Which of the following is the correct conversion for 1 hour in seconds?

Accepted Answer

1 hour = 3600 seconds

Question 15

A student adds 2.345, 0.07, and 2.9975. What is the sum rounded to the correct number of significant figures?

Accepted Answer

5.41

Question 16

Which of the following is a correct statement about the direction of heat transfer?

Accepted Answer

Heat transfers from hot to cold objects.

Question 17

A sample of water has a volume of 1.00 L. What is this volume in cubic centimeters?

Accepted Answer

1000 $$cm^3$$

Question 18

Which of the following is the best definition of a derived unit?

Accepted Answer

A unit that is a combination of two or more SI base units.

Question 19

A ring is claimed to be diamond (density = 3.51 g/mL). If its measured density is 2.36 g/mL, what can you conclude?

Accepted Answer

The ring is less dense than diamond and likely not genuine.

Units of Measurement and Derived Quantities in General Chemistry

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