1. Properties of Materials

2. Keywords Density Ductility Durability Elasticity Insulation
Malleability
Plasticity
Water- resistant

3. Definitions Density ; (noun) - the amount per unit size
Ductility ; (noun) - the malleability of something that can be drawn into threads or wires or hammered into thin sheets.
Elasticity ; (noun) - the tendency of a body to return to its original shape after it has been stretched 
Insulation ; (noun) - a material that reduces or prevents the transmission of heat or sound or electricity
Malleability / Plasticity ; (noun) - the property of something that can be worked or hammered or shaped without breaking
Resistant ; (adjective) - able to tolerate environmental conditions or physiological stress