Q: Which of the following is the correct conversion for $$1$$ kilogram to grams?

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

Q: Which of the following is the correct conversion for $$1 mm to $$meters?

$$1 \text{ mm} = 1 \times 10$$^{-3}$$ \text{ m}$$

Question 1

Which of the following numbers is correctly written in standard scientific notation?

Accepted Answer

$$1.54 	imes 10^1$

Question 2

Express 1,300,000 in scientific notation.

Accepted Answer

$$1.3 	imes 10^6$

Question 3

Which of the following is the correct value for $$2.3 	imes 10^4$ \div 1.15 	imes 10^2$?

Accepted Answer

$$2 	imes 10^2$

Question 4

Which prefix increases the size of a unit?

Accepted Answer

kilo-

Question 5

Which is larger: 1 milligram (mg) or 1 microgram ($$\mug$$)?

Accepted Answer

1 milligram (mg)

Question 6

Fill in the blank: $$1 	ext{ microliter} = \underline{\hspace{1cm}}$$ liters.

Accepted Answer

$$1 	imes 10$$^{-6}$$

Question 7

How many significant figures are in the measurement $$0.00524$$?

Accepted Answer

3

Question 8

Which of the following is an exact number?

Accepted Answer

17 eggs

Question 9

A student records a measurement as $$42.3 cm. $$How many significant figures does this value have?

Accepted Answer

3

Question 10

Which of the following measurements has the greatest number of significant figures?

Accepted Answer

$$0.3080 kJ$$

Question 11

If you multiply $$15.3 m by$$ $$12.130 m$$, how many significant figures should your answer have?

Accepted Answer

3

Question 12

Which of the following is the correct result for $$(11.2 	imes 2.43) \div 2.34$$ rounded to the correct number of significant figures?

Accepted Answer

$$11.6$$

Question 13

A thermometer reads $$77.5$$ $$^\circC. If $$the thermometer is marked to the nearest $$0.1$$ $$^\circC$$, how many significant figures does this measurement have?

Accepted Answer

3

Question 14

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

Accepted Answer

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

Question 15

Which of the following is the correct value for $$0.00856 	imes 10^2$ in standard scientific notation?

Accepted Answer

$$8.56 	imes 10$$^{-1}$$

Question 16

Which is larger: 1 nanosecond (ns) or 1 picosecond (ps)?

Accepted Answer

1 nanosecond (ns)

Question 17

A student adds $$12.12 cm $$and $$3.22 cm. $$What is the correct answer, rounded to the proper number of significant figures?

Accepted Answer

$$15.34 cm$$

Question 18

Which of the following is the correct value for $$81.9 \div 15.6$$ rounded to the correct number of significant figures?

Accepted Answer

$$5.25$$

Question 19

Which of the following is the correct conversion for $$1 mm to $$meters?

Accepted Answer

$$1 	ext{ mm} = 1 	imes 10$$^{-3}$$ 	ext{ m}$$

Question 20

Which of the following is the correct value for $$0.77555$$ rounded to three significant figures?

Accepted Answer

$$0.776$$

Introduction to Chemistry: Scientific Notation, Unit Conversions, and Significant Figures

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