Question 1

Which of the following best defines chemistry?

Accepted Answer

The study of matter and the changes it undergoes.

Question 2

Which of the following is the basic functional unit in chemistry?

Accepted Answer

Atom

Question 3

Matter is defined as anything that occupies ______ and has ______.

Accepted Answer

volume; mass

Question 4

Which of the following is an example of a compound?

Accepted Answer

Crystalline sugar (C$$_{12}H$_{22}O$_{11})$$

Question 5

Which of the following is a homogeneous mixture?

Accepted Answer

Gatorade

Question 6

Which of the following is a pure substance?

Accepted Answer

Lead wire

Question 7

Which of the following statements is true regarding the classification of matter?

Accepted Answer

Mixtures are composed of elements and/or compounds that are physically mixed together.

Question 8

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

Accepted Answer

It can be separated into simpler substances by physical means.

Question 9

A sample of salsa is best classified as:

Accepted Answer

A heterogeneous mixture

Question 10

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

Accepted Answer

Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures do not.

Question 11

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

Accepted Answer

Dissolving sugar in water

Question 12

Which of the following is true about elements?

Accepted Answer

They are composed of only one kind of atom.

Question 13

Which of the following is a correct classification for lead wire?

Accepted Answer

Element

Question 14

Which of the following best describes a compound?

Accepted Answer

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

Question 15

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

Accepted Answer

Salsa

Question 16

Which of the following is NOT a pure substance?

Accepted Answer

Gatorade

Question 17

Which of the following is true about mixtures?

Accepted Answer

They can be separated into their components by physical means.

Question 18

Which of the following best describes the composition of Gatorade?

Accepted Answer

Homogeneous mixture

Question 19

Which of the following is a correct statement about compounds?

Accepted Answer

They can be separated into their elements by chemical means.

Question 20

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

Accepted Answer

Compound

Classification of Matter: Introduction to General Chemistry

Study Guide - Practice Questions