Materials Science Worksheet - Ceramics and Plastics

Which of the following materials is classified as a ceramic in your text?

• Cermets

• Cements

• Pottery

• All of the Above

Linking of molecules by the addition or condensation mechanism is called _______.

• addition

• polymerization

• copolymerization

• chemical vapor deposition

_______ is not a property of plastics.

• High density

• Corrosion resistance

• Excellent surface finish

• Low energy content

What does HDPE stand for?

• High Density Polyethylene

• High Density Polypropylene

• High Density Propylene

• High Density Plastic Elastomer

______ facilitate removal of plastic parts from the mold.

• Lubricants

• Plasticizers

• Pigments

• Stabilizers

Ceramics are used in all of these applications except:

• Cutting tools

• Abrasives

• Automotive drive shafts

• Refractory material

Which type of plastics maintain mechanical properties on heating until they finally char or burn?

• Thermoplastics

• Thermosets

• Oriented plastics

• Biodegradable plastics

Which of the following describes "vulcanization"?

• Cross-linking of molecules in an elastomer

• Charring of a thermosetting plastic

• Heating a ceramic to a viscous state

• Drawing composite fibers through a heated die

______ are additives that improve the flow of plastic.

• Lubricants

• Plasticizers

• Pigments

• Stabilizers

Natural rubber and artificial rubber are two types of ______.

• ceramics

• composites

• elastomers

• None of the above