To the nearest $$0.01 \ \text{cm}$$

Question 1

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

Accepted Answer

$$3.20 \ 	ext{cm}$$

Question 2

Why is a measurement of $$25.00 \ 	ext{mL}$$ considered more precise than $$25 \ 	ext{mL}$$?

Accepted Answer

Because it has more significant figures, indicating a more precise measurement.

Question 3

When recording a measurement, what must you always include?

Accepted Answer

All known digits plus one estimated digit.

Question 4

A student measures the length of a pencil and records it as $$9.0 \ 	ext{cm}. $$How many significant figures are in this measurement?

Accepted Answer

2

Question 5

Which of the following best describes the 'eyeball test' in measurement?

Accepted Answer

Estimating the last digit based on visual judgment.

Question 6

Given the burette reading in the image, what is the correct value to record?

Accepted Answer

$$6.80 \ 	ext{mL}$$

Question 7

If a ruler is marked every $$0.1 \ 	ext{cm}$$, to what decimal place should you record your measurement?

Accepted Answer

To the nearest $$0.01 \ 	ext{cm}$$

Question 8

A student records the mass of a sample as $$8.00 \ 	ext{g}. $$Which of the following statements is true?

Accepted Answer

The measurement has 3 significant figures.

Question 9

Which of the following is the correct way to report a measurement if the smallest division on your instrument is $$0.1$$ units?

Accepted Answer

Report to the nearest $$0.01$$ units.

Question 10

A student measures the volume of a liquid as $$6.80 \ 	ext{mL}. $$Which digit is considered the estimated digit?

Accepted Answer

0

Question 11

Why is it important to include one estimated digit when recording a measurement?

Accepted Answer

It reflects the precision of the measuring instrument.

Question 12

If a measurement is recorded as $$3.200 \ 	ext{cm}$$, how many significant figures does it have?

Accepted Answer

4

Question 13

A student reads a thermometer and records the temperature as $$25.0 \ ^\circ 	ext{C}. $$What does the zero in the tenths place indicate?

Accepted Answer

It is an estimated digit, showing the measurement's precision.

Question 14

Which of the following best explains why $$3.20 \ 	ext{cm} is $$more precise than $$3.2 \ 	ext{cm}$$?

Accepted Answer

It has more significant figures, indicating a more precise measurement.

Question 15

A student measures a pencil and records $$9.0 \ 	ext{cm}. $$Which of the following is true about this measurement?

Accepted Answer

The zero is significant and indicates the precision of the measurement.

Significant Figures and Measurement Recording in Chemistry

Study Guide - Practice Questions