Pure Substances

Front

What is a pure substance?

Back

A pure substance is a material that is made up of only one type of atom (element) or compound.

Front

Give an example of a compound.

Back

Carbon Dioxide (CO2) is an example of a compound.

Front

What is a mixture?

Back

A mixture is two or more substances that are physically combined and can be separated.

Front

What are the smallest particles of matter called?

Back

Atoms are the smallest particles of matter.

Front

What is an element?

Back

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

Front

What distinguishes a pure substance from a mixture?

Back

A pure substance consists of only one type of particle, while a mixture contains two or more different particles that are not chemically bonded.

Front

Can a pure substance be a solid, liquid, or gas?

Back

Yes, a pure substance can exist in solid, liquid, or gas states.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the significance of the chemical formula of a compound?

Back

The chemical formula of a compound indicates the types and numbers of atoms present in the compound.

Front

How can mixtures be separated?

Back

Mixtures can be separated by physical methods such as filtration, distillation, or chromatography.