Question 1

Which of the following best defines chemistry?

Accepted Answer

The study of matter and the changes it undergoes, with the atom being its basic functional unit.

Question 2

Matter is defined as anything that:

Accepted Answer

Has mass and occupies space.

Question 3

Which of the following is the simplest type of matter composed of only one kind of atom?

Accepted Answer

Element

Question 4

A substance composed of two or more different elements that are chemically bonded together is called a:

Accepted Answer

Compound

Question 5

Which of the following is an example of a mixture?

Accepted Answer

Air

Question 6

Which of the following statements about compounds is correct?

Accepted Answer

Compounds are composed of two or more different elements chemically bonded together.

Question 7

A sample of seawater is best classified as:

Accepted Answer

A homogeneous mixture

Question 8

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

Accepted Answer

Its components are chemically bonded.

Question 9

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with a uniform composition throughout.

Question 10

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Question 11

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

Accepted Answer

Compounds have a fixed, definite composition.

Question 12

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

Accepted Answer

Melting of ice

Question 13

Which of the following is a chemical property?

Accepted Answer

Reactivity with acid

Question 14

A student mixes sand and salt together. Which method would best separate the two substances?

Accepted Answer

Filtration

Question 15

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more elements chemically combined in a fixed ratio.

Matter, Measurement & Problem Solving: Classification of Matter

Study Guide - Practice Questions