Introduction to Ceramics, Polymers and Composites

What is a key difference in the structure of glass compared to clay ceramics?

• Glass is made from clay.

• Glass has a regular crystalline structure.

• Glass has a completely disordered structure.

• Glass is opaque and resistant to chemical attacks.

Which of the following is NOT a property of clay ceramics?

• They are hard but brittle.

• They are transparent.

• They are resistant to chemical attacks.

• They are good insulators.

What primarily affects the properties of a polymer?

• The color of the polymer.

• The type of monomer used.

• The amount of water added during production.

• The temperature at which it is stored.

How does high density polyethylene differ from low density polyethylene?

• It is softer and more flexible.

• It is made from different monomers.

• It is harder and has a higher density.

• It is transparent.

What is a characteristic of thermosetting polymers?

• They are made from clay.

• They soften at high temperatures.

• They can be remolded easily.

• They have strong covalent bonds between chains.

What is the role of the matrix in a composite material?

• To provide color to the composite.

• To bind the reinforcement together.

• To make the composite transparent.

• To increase the weight of the composite.

Why is reinforced concrete stronger than regular concrete?

• It has a higher compressive strength.

• It is lighter in weight.

• It contains more water.

• It includes steel bars that provide tensile strength.