Question

Could a mixture be made up of only only elements and no compounds

Answer 1

Yes, a mixture could be made up of only elements and no compounds, given that the elements never undergo a chemical interaction and stay only in physical contact with each other. A compound is a substance bond between two or more different atoms, giving it a molecule.

Answer 2

You betcha ! You don't have to go very far to find a mixture like that ...
you're breathing it !

Earth's atmosphere is a mixture of nitrogen, oxygen, argon, and tiny
bits of other gases. Except for the carbon-dioxide and water vapor,
all the others are elements, not compounds.