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C11 PPQ Mistakes

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Total cards: 8•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (8)

#1
Front (Question)

Describe the shape and structure of DNA

Back (Answer)

• double helix • 2 polymer strands • 4 nucleotides

#2
Front (Question)

Why is it easier to recycle thermosoftening polymers

Back (Answer)

• they melt • so can be reshaped into new products

#3
Front (Question)

Describe: glass fibres and polyester

Back (Answer)

• glass fibre = reinforcement • polyester = matrix

#4
Front (Question)

name the functional group of ethanediol

Back (Answer)

alcohol

#5
Front (Question)

Equation of additional polymer

Back (Answer)

n(alkene) –> –(–alkene with double bond broken –)– n

#6
Front (Question)

How can different forms of polyethene be formed

Back (Answer)

• different conditions • under which they are created

#7
Front (Question)

why do some polymers not melt when heated

Back (Answer)

• Strong crosslinks between polymer chains • Too much energy is needed to break them

#8
Front (Question)

describe structure of thermosetting polymers

Back (Answer)

• long chain molecules • with strong covalent bonds between polymer chains