Plastics can be naturally occuring.

• True

• False

Synthetic plastics can be made from which list of raw materials?

• Charcoal, gas, crude diesel

• Oil, coal, gas

• Natural gas, charcoal, oil

• Crude oil, gas, charcoal

Monomers join together to form polymer chains. These polymer chain can be bundled together. When this happens and the chains are linked across each other it's called a ...

• Thermoplastic

• Thermoset plastic

Thermoset plastics can be remolded over and over again.

• True

• False

Thermoplastics are usually much easier to recycle than Thermoset plastics.

• True

• False

Which list is all Thermoplastics?

• Polyethylene Teraphthlatate, Polypropylene, Melamine

• Polyurethane, Urea Formaldehyde, Poly-vinyl chloride

• Acrylonitrile butadiene styrene, Polyurethane, Polyethylene

• High impact polystyrene, Polyethylene, Polyethylene teraphthalate

ABS is a thermoplastic that is used for products that have high impact resistance needs. This means it is ...

• Hard

• Tough

• Brittle

• Ductile

PE is the most common form of plastic. It usually comes as...

• LCPE and HCPE

• LPPE and HPPE

• LDPE and HDPE

• LEPE and HEPE

Thermosetting plastics will change their form when exposed to high heat.

• True

• False

Polyurethane is a thermosetting plastic. Which list best represents the properties of Polyurethane?

• good tensile strength, good thermal resistivity, can be molded with heat.

• good compressive strength, good thermal resistance, tough.

• good electrical insulation, hard, can be bonded easily