Pure Substances and Mixtures

Front

What is a colloid?

Back

A type of mixture that falls in between suspensions and solutions, where small particles are dispersed throughout a medium but do not settle out.

Front

What is the Periodic Table of the Elements?

Back

An arrangement of all known chemical elements organized by their atomic number, electron configuration, and recurring chemical properties.

Front

How can compounds be classified?

Back

Compounds can be classified as organic or inorganic, by their pH level, or by their role in the body.

Front

True or False: Elements and compounds are both considered pure substances.

Back

True

Front

What is a pure substance?

Back

A substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

Front

What is a mixture?

Back

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

Front

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

Back

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

Front

Give an example of a pure substance.

Back

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

Front

What is a suspension?

Back

A type of mixture where particles are dispersed in a fluid but can settle out over time.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.