anything that occupies space and has mass

thought that all forms of matter were made of tiny particles called “atoms”

A state of matter of which particles are rigid and close to one another.

the temperature at which a solid matter changes to liquid.

It is the ability of a material to be easily drawn into wires.

matter have a fixed or definite composition

●semiconductors

●composed of two or more different elements that are combined in a fixed ratio by a chemical reaction

how many elements known to exist today