Pure Substances and Mixtures

Front

What is a pure substance?

Back

A pure substance is matter that is always made up of the same combination of atoms.

Front

What are the two types of pure substances?

Back

Elements and compounds.

Front

What is a mixture?

Back

A mixture is matter that can be made up of different combinations of substances.

Front

Can mixtures be separated?

Back

Yes, mixtures can be separated by physical means.

Front

What is a compound?

Back

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

Front

How can compounds be separated?

Back

Compounds can only be separated by chemical means.

Front

What is the difference between homogeneous and heterogeneous mixtures?

Back

Homogeneous mixtures have a uniform composition, while heterogeneous mixtures have a non-uniform composition.

Front

Is sugar a compound or a mixture?

Back

Sugar is a compound.

Front

Is milk a homogeneous or heterogeneous mixture?

Back

Milk is a homogeneous mixture.

Front

What does it mean for a substance to be homogeneous?

Back

A homogeneous substance has a consistent composition throughout.