Elements, Compounds and Mixtures

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is a compound?

Back

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

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 molecule?

Back

A molecule is the smallest particle of a compound that retains the chemical properties of that compound.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically combined, while a mixture is made of different substances physically blended.

Front

Give an example of a mixture.

Back

Saltwater is an example of a mixture, as salt dissolves in water but can be separated by evaporation.

Front

Give an example of a compound.

Back

Water (H2O) is an example of a compound, as it is made of hydrogen and oxygen atoms chemically bonded together.

Front

What is a particle diagram?

Back

A particle diagram visually represents the arrangement and types of particles in a substance, helping to distinguish between mixtures and compounds.

Front

What is the smallest unit of an element?

Back

The smallest unit of an element is an atom.