Physical properties
Strength Thermal conductivity Electrical conductivity Brittleness Malleable Elasticity Density Boiling and melting point
Strength
If it can support a heavy load without breaking, tearing or changing form
Thermal conductivity
If it conducts heat or not
Electrical conductivity
Whether it conducts electricity or not
Brittleness
How easily it breaks
Malleable
How easily it can be harmed or rolled into different forms
Elasticity
How easily it can be stretched into thin wire
Density
Its mass per unit volume
Boling and melting point
The temperature whereby it changes into a liquid