$$1 \text{ km} = 1000 \text{ m}$$

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

$$5.2 \times 10$$^{-5}$$ \text{ m}$

$$1 \text{ m} = 100 \text{ cm}$$

Question 1

Which of the following is the correct conversion factor to change kilometers to meters?

Accepted Answer

$$1 	ext{ km} = 1000 	ext{ m}$$

Question 2

A runner completes a lap around the Earth's equator, which is approximately $$40,075 km. $$How many meters did the runner travel?

Accepted Answer

$$40,075,000$$ 	ext{ m}$

Question 3

If a laboratory sample has a mass of $$2.5 kg$$, what is its mass in grams?

Accepted Answer

$$2,500$$ 	ext{ g}$

Question 4

Which of the following best describes the purpose of using conversion factors in chemistry?

Accepted Answer

To convert measurements from one unit to another accurately

Question 5

A student measures the length of a table as $$150 cm. $$What is this length in meters?

Accepted Answer

$$1.5$$ 	ext{ m}$

Question 6

Which of the following is NOT a correct SI base unit?

Accepted Answer

Liter (L)

Question 7

A chemist needs $$0.75$$ liters of solution for an experiment. How many milliliters is this?

Accepted Answer

$$750$$ 	ext{ mL}$

Question 8

Which of the following is the correct way to express $$2.1 	imes 10^3$ meters in kilometers?

Accepted Answer

$$2.1$$ 	ext{ km}$

Question 9

A car travels $$120$$ miles. If $$1$$ mile is approximately $$1.609$$ kilometers, how many kilometers did the car travel?

Accepted Answer

$$193.08$$ 	ext{ km}$

Question 10

Which of the following conversion factors would you use to convert $$500$$ milligrams to grams?

Accepted Answer

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

Question 11

A scientist needs to prepare $$0.25$$ kilograms of a compound. How many grams is this?

Accepted Answer

$$250$$ 	ext{ g}$

Question 12

If the circumference of the Earth is $$40,075 km$$, what is the circumference in meters?

Accepted Answer

$$40,075,000$$ 	ext{ m}$

Question 13

Which of the following is the correct scientific notation for $$0.00052$$ meters?

Accepted Answer

$$5.2 	imes 10$$^{-5}$$ 	ext{ m}$

Question 14

A sample contains $$3.5$$ liters of a solution. How many milliliters does this represent?

Accepted Answer

$$3,500$$ 	ext{ mL}$

Question 15

Which of the following is the correct order of magnitude for the mass of a typical car, which is about $$1,500 kg$$?

Accepted Answer

$$1.5 	imes 10^3$ 	ext{ kg}$

Question 16

A patient is prescribed $$500 mL of IV $$fluid. How many liters is this?

Accepted Answer

$$0.5$$ 	ext{ L}$

Question 17

Which of the following is the correct conversion factor to change centimeters to meters?

Accepted Answer

$$1 	ext{ m} = 100 	ext{ cm}$$

Question 18

A medicine bottle contains $$250 mg of a $$drug. How many grams is this?

Accepted Answer

$$0.25$$ 	ext{ g}$

Question 19

A marathon is $$42.195$$ kilometers long. How many meters is this?

Accepted Answer

$$42,195$$ 	ext{ m}$

Units, Measurement, and Conversion in Chemistry

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