Question

A rock can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separate different parts of a rock into pure substances. This is because a rock is a(n) .

Answer 1

the awnser is minerals :)

Step-by-step explanation:

just took the test on edg.

Answer 2

This is because a rock is an aggregate of different minerals. This means that it is a physical mixture rather than a chemical one. While a rock is a combination of different minerals, minerals are substances with uniform composition, represented by a chemical formula.