| Term | Definition |
| malleability | the ability to be hammered or rolled into thin sheets without breaking |
| ductility | the ability of a solid to be drawn out into thin wires without breaking |
| conductivity | the ability of a material to allow either heat or electricity to flow through it |
| elasticity | the ability of a material to return to its original shape after being compressed or stretched |
| solubility | the ability of one material to be dissolved in another. |
| hardness | a measure of a substance's resistance to being scratched |
| transparent | allows light to pass through undisturbed |
| translucent | allows light to pass through it, but light is disturbed so that objects cannot be seen clearly |
| opaque | does not allow light to pass through it |
| melting point | the temperature at which a solid becomes a liquid (same temperature as the freezing point) |
| boiling point | the temperature at which a liquid becomes a gas (the same temperature as the condensation point) |
| density | mass per unit of volume |
| luster | the ability of a substance to reflect light |
| state | the form (solid, liquid, or gas) of a substance |
| texture | the way a substance feels (rough, smooth, etc) |