Final answer:
An element is a type of matter made up of only one kind of atom.
Step-by-step explanation:
The type of matter that is always made up of only one kind of atom is an element.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples of elements are oxygen, carbon, and gold. Each element is made up of only one kind of atom.
For example, oxygen (O) is an element that consists of only oxygen atoms.
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