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 pure substance?

Accepted Answer

Crystalline sugar

Question 3

Which statement is TRUE regarding compounds?

Accepted Answer

Compounds can only be broken down by chemical means.

Question 4

Which of the following is a heterogeneous mixture?

Accepted Answer

Trail mix

Question 5

A student mixes sand and salt. Which classification best describes the resulting mixture?

Accepted Answer

Heterogeneous mixture

Question 6

Which of the following is NOT a mixture?

Accepted Answer

Lead wire

Question 7

Which of the following is a homogeneous mixture?

Accepted Answer

Brass (alloy)

Question 8

Which of the following is classified as an element?

Accepted Answer

Gold bar

Question 9

Which of the following is a compound?

Accepted Answer

Ammonia (NH$$_3)$$

Question 10

Which of the following is an example of a solution?

Accepted Answer

Saline solution

Question 11

Which of the following can be separated by physical means?

Accepted Answer

Mixtures

Question 12

Which of the following is a variable composition?

Accepted Answer

Mixture

Question 13

Which of the following is a single component substance?

Accepted Answer

Element

Question 14

Which of the following is a homogeneous mixture found in everyday life?

Accepted Answer

Air

Question 15

Which of the following is a pure substance composed of more than one type of atom?

Accepted Answer

Compound

Question 16

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

Accepted Answer

Can be separated by physical means

Question 17

Which of the following is a heterogeneous mixture?

Accepted Answer

Chicken noodle soup

Question 18

Which of the following is a homogeneous mixture?

Accepted Answer

Wine

Question 19

Which of the following is an example of a mixture that can be separated by filtration?

Accepted Answer

Sand and water

Question 20

Which of the following best describes the difference between a compound and a mixture?

Accepted Answer

A compound has a fixed ratio of elements, while a mixture has variable composition.

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Study Guide - Practice Questions