Question 1

Which of the following is a pure substance?

Accepted Answer

Distilled water

Question 2

Which statement best explains why gases are compressible?

Accepted Answer

There is significant empty space between gas particles

Question 3

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 4

A student measures a sample three times and obtains 4.98 g, 4.99 g, and 4.97 g. These measurements are:

Accepted Answer

Precise but not accurate

Question 5

Which of the following best describes a mixture?

Accepted Answer

A combination of two or more substances that retain their individual properties

Question 6

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

Accepted Answer

Melting of ice

Question 7

Which of the following is NOT a unit of energy?

Accepted Answer

$$\mathrm{kg}$$

Question 8

Which of the following statements about matter is correct?

Accepted Answer

Matter has mass and occupies space

Question 9

Which of the following is an extensive property?

Accepted Answer

Mass

Question 10

A sample of metal has a mass of 15.0 g and a volume of 3.0 cm$$^3. $$What is its density?

Accepted Answer

$$5.0\ \mathrm{g/cm^3$}$$

Question 11

Which of the following best describes a chemical change?

Accepted Answer

Burning gasoline

Question 12

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Question 13

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

Accepted Answer

$$\mathrm{K}$$

Question 14

A student records the temperature of a reaction as 25.0 $$^\circC. $$What is this temperature in Kelvin?

Accepted Answer

$$298.15\ \mathrm{K}$$

Question 15

Which of the following is an example of a physical property?

Accepted Answer

Boiling point

Study Guidance for Chapter 1: Matter, Energy, and Measurement

Study Guide - Practice Questions