Ice is a solid because it has a definite shape and volume.

Water is a liquid because it has a definite volume but not a definite shape.

Air is a gas because it has neither a definite shape nor a definite volume.

Plasma is a state of matter that is characterized by high temperature and low density.

Viscosity is the property of matter that describes its resistance to flow.

Conductivity is the property of matter that describes its ability to conduct heat.

Malleability is the property of matter that describes its ability to be hammered into thin sheets.

Ductility is the property of matter that describes its ability to be drawn into thin wires.

Elasticity is the property of matter that describes its ability to change its shape without breaking.

Specific heat capacity is the property of matter that describes its ability to absorb energy without increasing its temperature.

Compressibility is the property of matter that describes its ability to resist compression.

Solubility is the property of matter that describes its ability to dissolve other substances.

Reactivity is the property of matter that describes its ability to react with other substances.

Luminescence is the property of matter that describes its ability to emit light.

Conductivity is the property of matter that describes its ability to conduct electricity.