Pure Substances & Mixtures

Front

What is a pure substance?

Back

A pure substance is a material made up of only one type of particle, which can be either an element or a compound.

Front

What is a mixture?

Back

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

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components are not uniformly distributed, such as cereal with milk.

Front

Give an example of a pure substance.

Back

Water (H2O) is an example of a pure substance.

Front

What are elements?

Back

Elements are pure substances that consist of only one type of atom.

Front

What are compounds?

Back

Compounds are pure substances formed when two or more elements chemically combine in fixed proportions.

Front

True or False: All mixtures are pure substances.

Back

False. Mixtures contain two or more substances.

Front

What is the difference between a compound and a mixture?

Back

A compound is a pure substance formed from two or more elements, while a mixture is a combination of substances that retain their individual properties.

Front

Is sugar a pure substance or a mixture?

Back

Sugar is a pure substance.