C11 part B

The phrase 'Of course' means:

• Certainly

• Maybe

• Never

• Rarely

What is the main difference between addition and condensation polymerisation?

• Only addition polymerisation uses monomers.

• Condensation polymerisation produces a polymer and a small molecule, while addition polymerisation only produces a polymer.

• Addition polymerisation is for natural polymers, while condensation is for synthetic polymers.

• Only addition polymerisation involves forming long chains.

To make a simple polyester, what two types of monomer are required?

• An alkene and an alkane.

• Two different alkenes.

• A diol (with two -OH groups) and a dicarboxylic acid (with two -COOH groups).

• An amino acid and a sugar.

What is the small molecule given off when making a polyester?

• Hydrogen chloride (HCl).

• Water (H2O).

• Hydrogen (H2).

• Carbon dioxide (CO2).

What type of link is formed between monomers when making a polyester?

• A peptide link.

• An ether link.

• A C=C double bond.

• An ester link.

A monomer with a functional group at both ends is a key requirement for condensation polymerisation. Why?

• So the chains can be very short.

• So the monomers can join together, end-to-end, to make a long polymer chain.

• To ensure the polymer is soluble in water.

• To make the polymer an addition polymer.

In the "nylon rope trick" experiment, two different monomers are reacted. What is the small molecule given off in this specific reaction?

• Water (H2O).

• Hydrogen chloride (HCl).

• Ammonia (NH3).

What does the term 'diol' mean?

• An alcohol containing two -OH groups.

• A carboxylic acid containing two -COOH groups.

• A polymer with two different monomers.

• An alkene with two double bonds.

In the general equation for making a polyester, what does n represent?

• The number of ester links.

• The number of water molecules produced per link.

• A very large number, representing the number of monomer molecules that join together.

• The number of carbon atoms.

What property of nylon is mentioned as being due to the strong intermolecular forces between its polymer chains?

• Its low melting point.

• Its colour.

• Its high tensile strength.

• Its ability to dissolve in water.