Question 1

Which of the following best describes a chemical change?

Accepted Answer

Burning wood to produce ash and gases

Question 2

Which property is considered intensive?

Accepted Answer

Density

Question 3

A sample of salt water is best classified as which of the following?

Accepted Answer

Mixture

Question 4

Which statement correctly distinguishes between elements and compounds?

Accepted Answer

Elements consist of only one kind of atom, while compounds consist of two or more different elements bonded together.

Question 5

Which of the following is a physical change?

Accepted Answer

Melting of ice

Question 6

Which property depends on the amount of matter present?

Accepted Answer

Mass

Question 7

Which of the following is a pure substance?

Accepted Answer

Salt (NaCl)

Question 8

Which equation correctly expresses density ($$d) in $$terms of mass ($$m) $$and volume ($$V$$)?

Accepted Answer

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

Question 9

A student mixes sand and iron filings. Which method would best separate these substances?

Accepted Answer

Using a magnet

Question 10

Which of the following statements about mixtures is correct?

Accepted Answer

Mixtures can be separated by physical means.

Question 11

Which of the following is NOT a chemical property?

Accepted Answer

Boiling point

Question 12

A compound is always:

Accepted Answer

Made of two or more different elements bonded together

Question 13

Which of the following best explains why density is an intensive property?

Accepted Answer

Density does not depend on the amount of substance present.

Question 14

Which process is a chemical change that occurs in everyday life?

Accepted Answer

Cooking an egg

Question 15

Which of the following is an example of a compound?

Accepted Answer

Water ($$H_2O)$$

Question 16

A student has a 50 g sample of pure copper and a 100 g sample of pure copper. Which statement is true?

Accepted Answer

Both samples have the same density.

Question 17

Which of the following is NOT a pure substance?

Accepted Answer

Milk

Question 18

Which of the following best describes an element?

Accepted Answer

A substance made of only one kind of atom

Question 19

Which of the following is an extensive property?

Accepted Answer

Mass

Question 20

Which of the following is a mixture?

Accepted Answer

Steel

Introduction to Matter and Its Properties

Study Guide - Practice Questions