AQA GCSE Chemistry · 8462
Specification 4.7.2.2 · Paper 2
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GCSE Chemistry · key term
A reaction in which atoms from another molecule join across a carbon–carbon double bond, forming a single carbon–carbon bond and one product.
Used by AQA, Edexcel and OCR
Specification 4.7.2.2 · Paper 2
Specification 9.14C, 9.15C · Paper 2
A reaction in which atoms are added across a multiple bond so that two reactants form one product.
Revise: Addition ReactionsThis is an addition reaction: the alkene and bromine combine to make a single product, with no atoms removed from the carbon chain.
For an alkene addition reaction, locate the C=C bond in the given structure before drawing the product. The two carbon atoms become joined by a single bond.
In an alkene addition reaction, replace the C=C with C–C and attach one part of the added molecule to each of those two carbon atoms.
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A reaction in which atoms add across a carbon–carbon double bond, producing one saturated product.
A reaction in which two reactant molecules join to make one product; bromine adds across an alkene's C=C bond.
Specification C6.2c · Paper 2 (Foundation), Paper 4 (Higher)
A reaction in which atoms join a molecule across a carbon–carbon double bond, producing one larger molecule.
Revise: Predicting Organic ReactionsIn an addition reaction, the double bond becomes a single C–C bond and each of its two carbon atoms gains a new bond. No carbon atoms are lost from the chain.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which atoms are added to the two carbon atoms of a carbon–carbon double bond, leaving a carbon–carbon single bond.
Revise: Predicting reaction productsDuring an addition reaction, the double bond becomes a single bond and new atoms attach to the two carbon atoms that formed the double bond. Two reactant molecules usually produce one organic product.