Question 1

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

Accepted Answer

32.330

Question 2

A student records the mass of a sample as 68.605 g using an analytical balance. How many significant figures are in this measurement?

Accepted Answer

5

Question 3

Which rule correctly explains why the zeros in the number 0.00909 are not significant?

Accepted Answer

Zeros that are placeholders for the decimal point are not significant.

Question 4

You measure the temperature as 32.33°C. If you report this as 32.3°C, what have you done to the number of significant figures?

Accepted Answer

Decreased the number of significant figures

Question 5

Which of the following glassware would you use to measure 25.00 mL of a solution with the highest precision?

Accepted Answer

Volumetric pipette

Question 6

Given the measurement 0.04050 L, how many significant figures does it contain?

Accepted Answer

4

Question 7

A student reads the meniscus of a graduated cylinder and records 53.0 mL. Which digit is the estimated digit?

Accepted Answer

0

Question 8

Which of the following numbers has three significant figures?

Accepted Answer

0.00340

Question 9

If you multiply 32.33 by 0.040, what is the correct number of significant figures in the answer?

Accepted Answer

2

Question 10

Which of the following best describes the purpose of significant figures in scientific measurement?

Accepted Answer

To show the precision and reliability of a measurement

Question 11

A measurement is recorded as 100.0 mL. According to the rules of significant digits, how many significant figures does this value have?

Accepted Answer

4

Question 12

Which of the following measurements is most likely to have been taken with a burette?

Accepted Answer

25.00 mL

Question 13

A student measures the mass of a sample as 0.0500 g. Which rule explains why both zeros are significant?

Accepted Answer

Zeros at the end of a number with a decimal are significant.

Question 14

Which of the following is the correct way to express the result of $$ 32.33 	imes 0.040 $$ with the proper number of significant figures?

Accepted Answer

$$ 1.29 $$

Question 15

If you add 32.33 and 0.040, what is the correct number of decimal places in the answer?

Accepted Answer

2

Question 16

Which of the following statements about significant figures is FALSE?

Accepted Answer

All zeros in a number are always significant.

Question 17

A student records a measurement as 0.00450 mL. How many significant figures are present?

Accepted Answer

3

Question 18

Which device would you use to measure a liquid with the greatest number of significant figures?

Accepted Answer

Volumetric pipette

Question 19

If a number is written as 0.00340, which digits are significant?

Accepted Answer

3, 4, and the zero at the end

Question 20

Which of the following measurements is most likely to be the result of using a digital balance?

Accepted Answer

68.605 g

Significant Figures and Measurement in Laboratory Science

Study Guide - Practice Questions