Elements, Compounds and Mixtures

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is an element?

Back

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

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, such as lemonade.

Front

What is a heterogeneous mixture?

Back

A mixture in which the composition is not uniform throughout, such as salad.

Front

Where can you find examples of elements?

Back

In the periodic table of elements.

Front

What is aluminum (Al)?

Back

An element.

Front

What is the difference between a compound and a mixture?

Back

A compound is a chemical combination of elements, while a mixture is a physical combination of substances.