What is a pure substance that contains atoms of more than one element called

Explanation:

A compound is defined as a substance formed due to chemical combination of two different elements which are present in a fixed ratio by mass.

A compound is a pure substance as it can be broken down into its constituent elements.

For example, is a pure substance and it can be broken down into magnesium and chlorine ions.

Thus, we can conclude that a pure substance that contains atoms of more than one element called compound.

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