Plastics

Multiple Choice

Which type of plastic can not be reshaped?

• thermoset Plastics

• thermoplastics

Multiple Choice

What are plastics classified by?

• thermal reaction

• toughness

• color

• stength

Multiple Choice

Which is not true about thermoset plastics?

• impact resistant

• made of linear and branched polymers

• made of cross-linked polymers

• break at high temperatures

Multiple Choice

Natural rubber comes from _____

• trees

• chemicals

Multiple Choice

What is added to rubber to make it more elastic and rigid?

• sulfur

• nylon

• iron

• calcium

Multiple Choice

what process is done to both natural and synthetic rubber to make it better for use?

• melting

• vulcanization

• broiling

• cent