Making Materials Quiz

What does clay undergo when it is fired at a high temperature?

• Metamorphosis

• Surgery

• Chemical changes

• Petrification

Which set of properties are commonly associated with ceramic materials?

• Good toughness, good conductivity, and lightweight.

• High levels of hardness, good conductivity, and lightweight.

• Elastic, flexible, and good conductivity

• High levels of hardness, high levels of heat resistance, and quite brittle.

What is the main ingredient in glass?

• Clay

• Limestone

• Concrete

• Silica

When PVA glue is mixed with borax, the properties of glue change into an elastic slime. What kind of process happened in making slime? (one word only)

What is the monomer of polyethylene?

Please do explain the exothermic reaction that happened during the process of making concrete.

Choose 2 materials properties that are suitable to make a speed boat!

• Brittle

• Flexible

• Lightweight

• Elastic

Please do explain the impact of incomplete combustion to humans and environment!

What are the possible problems that occurred in the manufacturing process?

• Waste leaking

• Running out of fossil fuels

• Acid rain

• Physical changes

Bulletproof windows are made of

• Glass + Clay

• Polymer + Metal

• Glass + Polymer

• Polymer