true or false : I. Minerals are naturally occurring substances. II. Each mineral has a specific chemical makeup. III. Minerals can be solids, liquids, or gases.

Question

Which of the following are true statements about minerals? I. Minerals are naturally occurring substances. II. Each mineral has a specific chemical makeup. III. Minerals can be solids, liquids, or gases. IV. Rocks are made of minerals.

Answer 1

Statements I and IV are true. Minerals are naturally occurring substances and can be found in rocks. Minerals do not have a specific chemical make-up because they are a combination of different solid elements and are not a pure element themselves. Minerals are a mixture of solid elements not liquid or gas.