Self Check: Classifying Matter

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Oxygen (O) and Carbon (C).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include Water (H2O) and Salt (NaCl).

Tags

NGSS.MS-PS1-1

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Mixtures can be homogeneous or heterogeneous.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. An example is saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout. An example is a salad.

Front

What distinguishes an element from a compound?

Back

An element is made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

Can a compound be separated into its elements?

Back

Yes, a compound can be separated into its elements through chemical reactions.

Tags

NGSS.MS-PS1-2

Front

What is the difference between a mixture and a compound?

Back

A mixture is a physical combination of substances that can be separated by physical means, while a compound is a chemical combination that can only be separated by chemical means.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, consisting of hydrogen and oxygen.

Tags

NGSS.MS-PS1-1

Front

What is an example of an element?

Back

Oxygen (O) is an example of an element.