Question 1

Which of the following is the correct relationship between Celsius and Kelvin temperatures?

Accepted Answer

$$K = ^\circ C + 273.15$$

Question 2

A laboratory experiment requires you to measure out 0.005 L of a solution. Which metric prefix best represents this volume?

Accepted Answer

5 milliliters

Question 3

Which of the following is the correct SI base unit and abbreviation for the amount of substance?

Accepted Answer

Mole, mol

Question 4

A patient’s body temperature is measured as 39.0 $$^\circC. $$What is this temperature in Kelvin?

Accepted Answer

$$312.2\ K$$

Question 5

Which of the following statements about the Kelvin temperature scale is correct?

Accepted Answer

Its zero point is absolute zero, the lowest possible temperature.

Question 6

Convert 0.25 kilograms to milligrams using metric prefixes.

Accepted Answer

$$2.5 	imes 10^6$ mg

Question 7

Which of the following is the correct formula for density ($$D) as $$given in the study materials?

Accepted Answer

$$D = \frac{m}{V}$$

Question 8

A sample of a substance has a mass of 13.5 g and a volume of 5.0 cm$$^3. $$What is its density?

Accepted Answer

$$2.7\ \mathrm{g/cm}^3$$

Question 9

Which of the following metric prefixes represents $$10^{-6}$$?

Accepted Answer

micro-

Question 10

A chemist needs to convert 3.2 meters to nanometers. What is the correct value?

Accepted Answer

$$3.2 	imes 10^9$ nm

Question 11

Which of the following is NOT a base unit in the metric system as described in the study materials?

Accepted Answer

liter (L)

Question 12

If a solution has a density of $$1.25\ \mathrm{g/mL}$$ and a mass of $$250\ \mathrm{g}$$, what is its volume in mL?

Accepted Answer

$$200\ \mathrm{mL}$$

Question 13

Which of the following best describes the Celsius temperature scale?

Accepted Answer

It is based on the freezing and boiling points of water.

Question 14

A student records a measurement as 4.7 $$	imes 10$^{-3}$$ meters. Which metric prefix is equivalent to this value?

Accepted Answer

4.7 millimeters

Question 15

Which of the following is the correct abbreviation for the SI unit of temperature?

Accepted Answer

K

Question 16

A sample of gas is measured at 0 $$^\circC. $$What is the temperature in Kelvin?

Accepted Answer

$$273.15\ K$$

Question 17

Which of the following is the correct metric prefix and its power of ten for 'giga-'?

Accepted Answer

G, $$10^9$$

Question 18

A beaker contains 250 mL of water. Express this volume in liters using the correct metric conversion.

Accepted Answer

$$0.25\ L$$

Question 19

Which of the following is the correct metric prefix for $$10^{-12}$$?

Accepted Answer

pico-

Question 20

A scientist needs to prepare a solution with a concentration of 0.1 mol/L. If she needs 0.5 moles of solute, what volume of solution should she prepare?

Accepted Answer

$$5.0\ L$$

Metric System, Units, and Temperature Scales in General Chemistry

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