(a)   is something having a certain form

A _ is a naturally-occurring inorganic solid which possesses a characteristic internal atomic structure and a definite chemical composition

(a)  

A (a)   is a naturally occurring solid made up of one or more minerals.

(a)   is an object surrounded by a magnetic field, causing iron or steel materials to be attracted to it.

The (a)   of a mineral is its ability to resist scratching

A (a)   is a solid that forms by a regular repeated pattern of molecules connecting together.

(a)   is the aspect of things that is caused by differing qualities of light being reflected or emitted by them

(a)   is how light is reflected from the surface off a mineral

(a)   is the ability of a mineral to break along preferred planes

(a)   is when a mineral breaks unevenly. fractures result in chips and rough surfaces on minerals.

(a)   is the color of the powder left on a streak plate when the mineral is scraped across it.

A _ is a scientist who studies the Earth the materials of which it is made the processes acting upon them and how they have changed over time

(a)  

(a)   rocks are a type of rock formed when magma inside the Earth or lava on the Earth's surface cools.

_ rocks are a type of rock that is formed by the consolidation of sediment particles or of the remains of plants and animals

(a)  

(a)   rocks are rock formed by great heat and pressure.

The (a)   is the processes through which rocks change from one type to another