C.15 EOY10

Question 1

Low density

Answer 1

• High pressure, trace oxygen
• Randomly branched, cannot be packed closely together
• Low density

Question 2

High Density

Answer 2

• Catalyst at 50, slight pressure
• Straight chains, packable
• High density

Question 3

Thermosoftening

Answer 3

• Weak intermolecular forces between chains
• Brake w/ little energy

Question 4

Thermosetting

Answer 4

• Covalent bonds between monomer chains
• Called cross-links
• Do not brake