The three correct statements about minerals are:
- Minerals are the components that make up rocks.
- Minerals are naturally occurring substances.
- Minerals are made of one element or one compound of elements.
The other statements are incorrect because:
- Rocks are not the components that make up minerals; it's the other way around.
- Minerals can be identified by a variety of properties, not just color and hardness.
- Observing one property is often not sufficient for accurate identification; multiple properties are usually needed.