Question 1

Which of the following is the correct metric unit and abbreviation for measuring mass?

Accepted Answer

kilogram (kg)

Question 2

A student measures the length of a table as 2.305 meters. How many significant figures are in this measurement?

Accepted Answer

4

Question 3

Which of the following numbers has three significant figures?

Accepted Answer

0.00450

Question 4

What is the value of the prefix 'milli-' in scientific notation?

Accepted Answer

$$1 	imes 10$$^{-3}$$

Question 5

Convert 2500 milliliters (mL) to liters (L) using the correct conversion factor.

Accepted Answer

2.5 L

Question 6

A sample of gold has a mass of 96.5 g and a volume of 5.00 cm$$^3. $$What is the density of gold?

Accepted Answer

$$19.3 \ \mathrm{g/cm^3$}$$

Question 7

Which of the following best describes a conversion factor?

Accepted Answer

A ratio used to express a measurement in different units

Question 8

If a measurement is recorded as 0.02030 g, how many significant figures does it have?

Accepted Answer

5

Question 9

Which of the following is the correct way to write 0.00056 in scientific notation?

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 10

A nurse needs to administer 0.5 L of saline to a patient. How many milliliters (mL) is this?

Accepted Answer

500 mL

Question 11

Which of the following statements about significant figures is correct?

Accepted Answer

Zeros between nonzero digits are always significant.

Question 12

A solution has a density of $$1.25 \ \mathrm{g/mL}. $$What is the mass of 200 mL of this solution?

Accepted Answer

250 g

Question 13

Which of the following is NOT a base unit in the metric system?

Accepted Answer

inch (in)

Question 14

A patient’s blood sample has a mass of 15.0 g and a volume of 12.0 mL. What is the density of the blood sample?

Accepted Answer

$$1.25 \ \mathrm{g/mL}$$

Question 15

Which conversion factor would you use to convert centimeters to meters?

Accepted Answer

$$\frac{1 \ \mathrm{m}}{100 \ \mathrm{cm}}$$

Question 16

Which of the following is the correct value for the prefix 'kilo-'?

Accepted Answer

$$1 	imes 10$$^{3}$$

Question 17

A laboratory solution is labeled as 0.750 L. How many milliliters is this?

Accepted Answer

750 mL

Question 18

Which of the following is an example of a measured number?

Accepted Answer

The mass of a sample recorded as 12.3 g

Question 19

A student needs to convert 5.0 km to meters. Which conversion factor should be used?

Accepted Answer

$$\frac{1000 \ \mathrm{m}}{1 \ \mathrm{km}}$$

Question 20

Which of the following best describes the specific gravity of a substance?

Accepted Answer

The ratio of the density of a substance to the density of water

Chapter 2: Chemistry and Measurements – Study Notes

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