Question 1

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the composition is uniform throughout.

Question 2

Which of the following is an example of a chemical change?

Accepted Answer

Rusting of iron when exposed to air.

Question 3

Which property is classified as an intensive property?

Accepted Answer

Density

Question 4

Which of the following is NOT a physical property?

Accepted Answer

An iron bar rusts.

Question 5

Which of the following is an extensive property?

Accepted Answer

Kilograms

Question 6

Which of the following processes is reversible?

Accepted Answer

Dissolving salt in water.

Question 7

Which of the following is a chemical property of hydrogen gas?

Accepted Answer

It reacts explosively with oxygen gas.

Question 8

Which of the following is a compound?

Accepted Answer

Ammonia, $$\mathrm{NH_3$}$$

Question 9

Which of the following mixtures is homogeneous?

Accepted Answer

A cup of black coffee

Question 10

Which of the following is NOT a chemical property for an unknown element?

Accepted Answer

It has a yellow-orange color.

Question 11

Which of the following is NOT an example of an intensive property?

Accepted Answer

Milligrams

Question 12

Which of the following is classified as a physical change?

Accepted Answer

Dissolving sugar in water

Question 13

Which of the following is a SI base unit for measuring mass?

Accepted Answer

Kilogram ($$\mathrm{kg})$$

Question 14

What is the correct formula to convert Celsius temperature to Kelvin?

Accepted Answer

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

Question 15

Which of the following scientific notation values is written correctly?

Accepted Answer

$$1.25 	imes 10^4$

Question 16

A student measures the mass of a gold bar as $$250\ \mathrm{g}$$ and its volume as $$13.0\ \mathrm{cm^3$}. $$What is the density of the gold bar?

Accepted Answer

$$19.2\ \mathrm{g/cm^3$}$$

Question 17

Which of the following is a real-world example of an irreversible change?

Accepted Answer

Turning a potato into french fries.

Question 18

Which of the following containers would have the greatest flow of thermal energy in the form of heat?

Accepted Answer

120 g of water at $$50^\circC $$and 49 g of water at $$10^\circC$$

Question 19

Which of the following is the correct formula to convert Fahrenheit temperature to Celsius?

Accepted Answer

$$^\circ C = \frac{^\circ F - 32}{1.8}$$

Question 20

Which of the following is the correct SI unit for measuring the area of a laboratory bench?

Accepted Answer

$$\mathrm{m^2$}$$

Fundamental Concepts in General Chemistry: Matter, Properties, and Measurement

Study Guide - Practice Questions