repeating unit
What repeating unit means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of repeating unit
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Reference: AQA
The smallest section of chain that repeats, drawn inside brackets with the two bonds crossing the brackets and n written outside.
The shortest section of the polymer chain bounded by the two single bonds derived from the original double bond.
The part of the polymer chain that repeats, drawn with both bonds passing through the brackets.
The smallest section of chain that, repeated end to end, builds the whole polymer.
Topics that use repeating unit
- Addition polymers (AQA A-Level)
- Condensation polymers (A-level only) (AQA A-Level)
- Alkenes (OCR A-Level)
Related terms
- Addition polymerisation
- Addition polymerisation of alkenes
- Addition reactions forming other organic chemicals
- amino acid self-condensation
- Atomic number and first point of difference
- Biodegradable and renewable alternatives
- Biodegradable polymers
- bond breaking and bond formation
Using repeating unit in the exam
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