SME
Grade 10 Science · Problem type
Addition or condensation polymer?
Use this for “Is nylon an addition polymer or a condensation polymer?”
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How are the monomers joined?
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Assumptions
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A polymer is a long chain of small units, monomers, joined end to end.
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Addition: monomers with a C=C double bond open it and link up, losing nothing.
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Condensation: two groups join and give off a small molecule, usually water.
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Related lessons
Organic chemistry: hydrocarbons, functional groups and polymers
Main lesson
Alkenes: one double bond
Use this for an alkene’s formula and name: a chain with one carbon–carbon double bond, CₙH₂ₙ.
Alkynes: one triple bond
Use this for an alkyne’s formula and name: a chain with one carbon–carbon triple bond, CₙH₂ₙ₋₂.
Isomers: a branched alkane
Use this for “Draw an isomer of pentane” or “How many hydrogens does 2-methylbutane have?”
Functional groups
Use this for “Which functional group does ethyl acetate have?”