Question

1)

Which polymer is cheaper and stronger than metals but remains flexible? It is often used in pipes, upholstery and inflatable products.

Polystyrene (PS)

Nylon

Polypropylene (PP)

Polyvinyl Chloride (PVC)

Polytetrafluoroethylene (Teflon)

2)

Rank the following molecules in order from highest to lowest boiling point: methoxymethane, propane, ethanoic acid, ethanol.

propane > methoxymethane > ethanol > ethanoic acid

propane > ethanol > methoxymethane > ethanoic acid

ethanoic acid > ethanol > propane > methoxymethane

ethanoic acid > ethanol > methoxymethane > propane

ethanol > methoxymethane > propane > ethanoic acid

3)

Which molecule would you expect to have the highest surface tension?

H2OH2O

CH3OCH3CH3OCH3

CH3COOHCH3COOH

CH3NHCH3CH3NHCH3

CH3OH

Answer 1