Pure Substances and Mixtures

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components are not uniformly distributed and can be visually distinguished.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture where the components are uniformly distributed and cannot be visually distinguished.

Front

Can pure substances be broken down using physical methods?

Back

No, pure substances cannot be broken down into simpler matter using physical methods.

Front

What is the simplest kind of pure substance?

Back

The simplest kind of pure substance is an element.

Front

What are compounds made up of?

Back

Compounds are made up of multiple types of elements that are chemically combined.

Front

Give an example of a heterogeneous mixture.

Back

An example of a heterogeneous mixture is a salad, where the individual ingredients can be seen and separated.

Front

Give an example of a homogeneous mixture.

Back

An example of a homogeneous mixture is saltwater, where the salt is completely dissolved and cannot be seen.

Front

What distinguishes a homogeneous mixture from a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition.