what is the name for a substance made up of only one kind of atom? mixture, molecule, element, compound, try…

what is the name for a substance made up of only one kind of atom? mixture, molecule, element, compound, try another answer
Answer
Brief Explanations:
An element is a substance made up of only one - kind of atom. A molecule is made up of two or more atoms (which can be of the same or different elements). A compound is made up of two or more different kinds of elements chemically combined. A mixture contains two or more substances that are not chemically combined.
Answer:
C. Element