Pure Substances Review

Front

What are pure substances?

Back

Pure substances are materials that are made up of only one type of particle. They can be elements or compounds.

Front

True or False: Elements and compounds are pure substances.

Back

True

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 homogeneous mixture?

Back

A homogeneous mixture is a mixture that is uniform in composition and appearance throughout.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that is not uniform in composition and has distinct, separate parts.

Front

Give an example of a homogeneous mixture.

Back

Saltwater is an example of a homogeneous mixture because the salt is completely dissolved in the water.

Front

Give an example of a heterogeneous mixture.

Back

Fruit salad is an example of a heterogeneous mixture because the different fruits can be seen and separated.

Front

What is a solution?

Back

A solution is a type of homogeneous mixture where one substance is dissolved in another.

Front

What is the difference between a solution and a suspension?

Back

A solution is homogeneous and the solute is completely dissolved, while a suspension contains larger particles that can settle out.

Front

What are colloids?

Back

Colloids are mixtures where tiny particles are dispersed throughout another substance but do not settle out.