Q: Minerals that are not pure elements are made of what?


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

Minerals that are not pure elements 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:

- isotopes

- noble gases

- metalloids

- chemical compounds


A:
chemical compounds