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 ($\mu$g)?

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 $77.5$ $^\circ$C. If the thermometer is marked to the nearest $0.1$ $^\circ$C, 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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