CHEMISTRY MIDTERM EXAM

What do you call to a long-chain molecule made from a combination of many small repeating units called as monomers?

• Rubber
• Polymer
• Latex
• Synthetic Rubber

SYNTHETIC POLYMERS: What does the word "synthetic" mean?

• naturally occuring
• composed of natural materials
• Man-made or artificially created
• Biodegradable and environmentally friendly

What is the term to describe synthetic polymer?

• rubber
• metal
• plastic
• paper

Thermoplastic is a plastic that can be _____

• melted and recast many times
• hammered into thin wires
• coiled
• stretched

TRUE OR FALSE: Synthetic polymers are very stable. They do not corrode or decay easily.

• TRUE
• FALSE

TRUE OR FALSE: Condensation and polymerisation involves a combination of THE SAME types of monomers.

• TRUE
• FALSE

Which of the following correctly defines "elastic"?

• Able to resist any change in shape or size.
• Able to return to its original shape or size after being stretched or compressed.
• Unable to adapt or change in response to different conditions.
• Constant and unchanging regardless of external forces.

Which of the following plastic that can be cast once because there are cross-links that are sturdy between its polymers.

• thermoplastic
• thermoset
• elastomer
• elasticitomer

What do you call the polymer that has elastic polymer like rubber?

• thermoplastic
• thermoset
• elastomer
• elasticitomer

The following are properties of Synthetic polymer, EXCEPT.

• Light, hard, and strong

• High density

• Easy to mould or shape

• Can be coloured easily