Q: Which of the following equalities is correct for the prefix 'micro'?

$$1 \ \mu\text{g} = 1 \times 10$$^{-6}$$ \ \text{g}$$

Q: Which of the following is the correct relationship between centimeters and millimeters?

$$1 \ \text{cm} = 10 \ \text{mm}$$

Q: Which of the following equalities is correct for volume?

$$1 \ \text{L} = 1000 \ \text{mL}$$

Q: Which of the following is the correct equality for mass?

$$1 \ \text{g} = 1000 \ \text{mg}$$

Q: Which of the following is the correct relationship for deciliters and liters?

$$1 \ \text{dL} = 0.1 \ \text{L}$$

Q: Which of the following is the correct equality for centigrams?

$$1 \ \text{g} = 100 \ \text{cg}$$

Question 1

A retinal camera is used to photograph the retina of the eye. If the image sensor in the camera is 2.5 cm wide, what is this width in millimeters?

Accepted Answer

$$25 \ 	ext{mm}$$

Question 2

Which of the following equalities is correct for the prefix 'micro'?

Accepted Answer

$$1 \ \mu	ext{g} = 1 	imes 10$$^{-6}$$ \ 	ext{g}$$

Question 3

A patient is prescribed 0.4 g of magnesium daily. How many milligrams is this?

Accepted Answer

$$400 \ 	ext{mg}$$

Question 4

Which prefix represents a factor of $$10^9$$?

Accepted Answer

giga

Question 5

A laboratory result is reported as 2.5 dL of blood. How many milliliters is this?

Accepted Answer

$$250 \ 	ext{mL}$$

Question 6

Which of the following is the correct relationship between centimeters and millimeters?

Accepted Answer

$$1 \ 	ext{cm} = 10 \ 	ext{mm}$$

Question 7

A cube has sides of 1 cm. What is its volume in milliliters?

Accepted Answer

$$1 \ 	ext{mL}$$

Question 8

Which of the following is the largest unit?

Accepted Answer

kilogram

Question 9

If a nutrient's daily value is 150 $$\mug$$, how many milligrams is this?

Accepted Answer

$$0.15 \ 	ext{mg}$$

Question 10

Which of the following equalities is correct for volume?

Accepted Answer

$$1 \ 	ext{L} = 1000 \ 	ext{mL}$$

Question 11

A doctor orders 2 mg of a medication. How many micrograms is this?

Accepted Answer

$$2000 \ \mu	ext{g}$$

Question 12

Which of the following is the correct equality for mass?

Accepted Answer

$$1 \ 	ext{g} = 1000 \ 	ext{mg}$$

Question 13

A solution contains 0.01 L of liquid. What is this volume in centiliters?

Accepted Answer

$$1 \ 	ext{cL}$$

Question 14

Which prefix would you use to express a quantity of $$1 	imes 10$$^{-9}$$ meters?

Accepted Answer

nano

Question 15

A laboratory sample has a mass of 0.002 kg. What is this mass in grams?

Accepted Answer

$$2 \ 	ext{g}$$

Question 16

A cube has a volume of $$1000 \ 	ext{cm}^3. $$What is its volume in liters?

Accepted Answer

$$1 \ 	ext{L}$$

Question 17

Which of the following is the correct relationship for deciliters and liters?

Accepted Answer

$$1 \ 	ext{dL} = 0.1 \ 	ext{L}$$

Question 18

A newborn's length is measured as 50 cm. What is this length in millimeters?

Accepted Answer

$$500 \ 	ext{mm}$$

Question 19

Which of the following is the correct equality for centigrams?

Accepted Answer

$$1 \ 	ext{g} = 100 \ 	ext{cg}$$

Question 20

A sodium supplement contains 2.4 g of sodium. How many milligrams is this?

Accepted Answer

$$2400 \ 	ext{mg}$$

Metric and SI Units: Prefixes, Equalities, and Measurement in Chemistry

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