Q: Minerals that are not compounds consist of a single what?


Read this paragraph and choose the correct option from the provided answers:

Minerals that are not just a single element are made of chemical compounds. For example, the mineral quartz is made of the compound silicon dioxide, or SiO 2 . This compound has one atom of the element silicon for every two atoms of the element oxygen.

 Choices:

- electron

- gas

- proton

- element


A:
element