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).

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Zaire Mercado

Chemistry

21 June, 11:27

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).

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Makenzie Holland · Answer 1

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.