$$\frac{2.50\ \text{g}}{1.06\ \text{mL}} = 2.36\ \text{g/mL}$$

$$1.5\ \text{h} \times \frac{60\ \text{min}}{1\ \text{h}} \times \frac{60\ \text{s}}{1\ \text{min}} = 5400\ \text{s}$$

$$\frac{120\ \text{km}}{2\ \text{h}} \times \frac{1000\ \text{m}}{1\ \text{km}} \times \frac{1\ \text{h}}{3600\ \text{s}} = 16.7\ \text{m/s}$$

$$\frac{250\ \text{g}}{250\ \text{mL}} = 1.00\ \text{g/mL}$$

$$37 + 273.15 = 310.15\ \text{K}$$

$$1\ \text{N} = 1\ \text{kg} \cdot \text{m}/\text{s}^2$$

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

meter per second (m/s)

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

$$\frac{2.50\ 	ext{g}}{1.06\ 	ext{mL}} = 2.36\ 	ext{g/mL}$$

Question 5

Which of the following best describes the Kelvin temperature scale?

Accepted Answer

It starts at absolute zero, where molecular motion stops.

Question 6

Convert 1.5 hours to seconds using the appropriate conversion factors.

Accepted Answer

$$1.5\ 	ext{h} 	imes \frac{60\ 	ext{min}}{1\ 	ext{h}} 	imes \frac{60\ 	ext{s}}{1\ 	ext{min}} = 5400\ 	ext{s}$$

Question 7

Which of the following is the correct relationship between liters and cubic centimeters?

Accepted Answer

1 L = 1000 $$cm^3$$

Question 8

A car travels 120 kilometers in 2 hours. What is its average speed in meters per second?

Accepted Answer

$$\frac{120\ 	ext{km}}{2\ 	ext{h}} 	imes \frac{1000\ 	ext{m}}{1\ 	ext{km}} 	imes \frac{1\ 	ext{h}}{3600\ 	ext{s}} = 16.7\ 	ext{m/s}$$

Question 9

Which of the following is NOT an SI base unit?

Accepted Answer

liter (L)

Question 10

A sample of water has a mass of 250 g and a volume of 250 mL. What is its density?

Accepted Answer

$$\frac{250\ 	ext{g}}{250\ 	ext{mL}} = 1.00\ 	ext{g/mL}$$

Question 11

Which of the following statements about the metric and English systems is correct?

Accepted Answer

The metric system is used in most of the world, while the English system is mainly used in the United States.

Question 12

If a temperature is measured as 37°C, what is its value in Kelvin?

Accepted Answer

$$37 + 273.15 = 310.15\ 	ext{K}$$

Question 13

Which of the following is the correct conversion for 1 kilogram to pounds?

Accepted Answer

1 kg = 2.205 lb

Question 14

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 15

Which of the following is the correct definition of density?

Accepted Answer

Density is mass per unit volume.

Question 16

A force is measured as 10 newtons. Which of the following correctly expresses a newton in terms of SI base units?

Accepted Answer

$$1\ 	ext{N} = 1\ 	ext{kg} \cdot 	ext{m}/	ext{s}^2$$

Matter, Measurement, and Problem Solving: Units and Derived Quantities

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