Elements, Compounds, Mixtures

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

Give an example of a pure substance.

Back

Distilled water (H₂O) is an example of a pure substance.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

Provide an example of a compound.

Back

H₂O (water) is an example of a compound.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded, while a mixture consists of two or more substances that are physically combined.

Front

How can the parts of a compound be separated?

Back

The parts of a compound can be separated by chemical means.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

Give an example of an element.

Back

Oxygen (O) is an example of an element.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties.