Unit 10 Properties of materials

What is the hardest material in the world?

• Iron

• Diamond

• Gold

• Aluminium

Which is harder, glass or aluminium?

• Glass

• Aluminium

• Both of them

• Any of them

Rubber and fabric are examples of:

• Soft materials

• Hard materials

• Ductile materials

• Non-ductile materials

Refers to the ability of a material withstand wear and scratches.

Refers to the ability to a material to bend without breaking.

Is the ability of a material to be pulled into wires.

A piece of glass and wooden logs are examples of:

• Flexible materials

• Soft materials

• Ductile materials

• Non-ductile materials

Why does oil float on water?

• Oil has a lower density than water.

• Oil has a higher density than water

• Oil has the same density of water

• Oil has mass

Ability of a material to float in a liquid or a gas.

Plastics, glass, rubber and fabrics are examples of waterproof materials.

• False

• True