REVISION MATERIALS

___________ is the relationship between mass and volume

Density of a material tells us if the material is heavy or __________

_______________ is the resistance of a material to be scratched.

When a material is difficult to break with a hit or impact, we say it is ____________

When a material breaks easily with a hit or impact, we say it is _______________________

Some plastics or cardboard are ____________ materials because they are easy to scratch or cut.

Most metals, glass or some woods are ____________ materials because they are difficult to scratch or cut.

Strong materials are those that resist high __________ without breaking.

__________________ is the capacity of a material to recover the original shape and size when the force of deformation stops.

Some materials deform a lot before recovering the original shape, we say they are ______________ materials.