What term describes a substance that contains only one type of atom?

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Multiple Choice

What term describes a substance that contains only one type of atom?

Explanation:
An element is a pure substance made of only one type of atom. That means every particle is the same kind of atom, whether it exists as individual atoms or as molecules composed of identical atoms (such as O2 or N2). This distinguishes it from a compound, which combines two or more different elements, and from a mixture, which blends different substances without chemical bonding. So when a substance contains only one kind of atom, it falls into the category of an element.

An element is a pure substance made of only one type of atom. That means every particle is the same kind of atom, whether it exists as individual atoms or as molecules composed of identical atoms (such as O2 or N2). This distinguishes it from a compound, which combines two or more different elements, and from a mixture, which blends different substances without chemical bonding. So when a substance contains only one kind of atom, it falls into the category of an element.

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