Chemistry GCSE
Repeating units
What Repeating units means in Chemistry GCSE, as defined for AQA.
Definitions of Repeating units
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Reference: AQA
The unit placed in brackets with n outside, showing the correct atoms and bonds, with bonds extending beyond the brackets to show the chain continues.
The part of the polymer showing both monomer residues joined by ester links, with the atoms of the eliminated water molecules missing.
The smallest part of the chain that repeats many times along the chain.
Topics that use Repeating units
- Condensation polymerisation (HT only) (AQA GCSE)
- Covalent bonding (AQA GCSE)
- Polymers (AQA GCSE)
Related terms
- Covalent bonding
- Addition polymerisation
- Bond strength and energy transfer
- Chain growth
- Condensation polymerisation
- Diamond
- Dot and cross diagrams
- Explaining physical properties of simple molecules
Using Repeating units in the exam
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