Question 1

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more elements that are chemically bonded together.

Question 2

Which of the following is an example of a homogeneous mixture?

Accepted Answer

Wine

Question 3

Which statement about pure substances is correct?

Accepted Answer

Pure substances have a fixed composition and distinct properties.

Question 4

Gasoline is classified as which of the following?

Accepted Answer

Homogeneous mixture

Question 5

Which of the following is NOT a mixture?

Accepted Answer

Gold bar

Question 6

Which of the following statements is TRUE?

Accepted Answer

Mixtures have variable composition.

Question 7

A sample of seawater (unfiltered) is best classified as:

Accepted Answer

Heterogeneous mixture

Question 8

Which of the following is a chemical property?

Accepted Answer

Ability to react with oxygen

Question 9

Which of the following substances is an element?

Accepted Answer

Gold bar

Question 10

Which of the following is a correct classification for crystalline sugar?

Accepted Answer

Compound

Question 11

Which of the following is a heterogeneous mixture?

Accepted Answer

Salsa

Question 12

Which of the following is NOT a characteristic of a mixture?

Accepted Answer

It has a fixed composition.

Question 13

Which of the following is a correct statement about compounds?

Accepted Answer

Compounds can be separated into elements by chemical means.

Question 14

Which of the following is a homogeneous mixture?

Accepted Answer

Gatorade

Question 15

Which of the following is a pure substance?

Accepted Answer

Gold bar

Question 16

Which of the following is a correct classification for ammonia ($\mathrm{NH_3}$)?

Accepted Answer

Compound

Question 17

Which of the following is NOT a pure substance?

Accepted Answer

Salsa

Question 18

Which of the following is a correct statement about elements?

Accepted Answer

Elements are composed of only one kind of atom.

Question 19

Which of the following is a correct classification for trail mix?

Accepted Answer

Heterogeneous mixture

Question 20

Which of the following is a correct classification for saline solution?

Accepted Answer

Homogeneous mixture

Matter and Its Classification: Introduction to General Chemistry

Study Guide - Practice Questions