Pure Substances & Mixtures

Front

What is a pure substance?

Back

A pure substance is a material that is 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 substance retains its own properties.

Front

What are the two main categories of matter?

Back

Matter is classified into pure substances and mixtures.

Front

What is an element?

Back

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

Front

What is a compound?

Back

A compound is a pure substance formed when two or more elements chemically combine in fixed proportions.

Front

What are homogeneous mixtures?

Back

Homogeneous mixtures are mixtures that have a uniform composition throughout, such as saltwater.

Front

What are heterogeneous mixtures?

Back

Heterogeneous mixtures are mixtures that do not have a uniform composition, such as a salad.

Front

Give an example of a pure substance.

Back

Examples of pure substances include water (H2O), gold (Au), and sugar (C12H22O11).

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a consistent composition throughout, while a heterogeneous mixture has distinct, separate components.

Front

What is a colloid?

Back

A colloid is a type of mixture where tiny particles are dispersed throughout another substance but do not settle out, like milk.