Chemical reactions of the alkenes
1 mark · EasyState the main type of bond found between carbon atoms in alkenes.
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A carbon-carbon double bond (C=C)
Must show: C=C double bond
Also accept: Double bond; Carbon–carbon double bond
Common mistakes: single bond; triple bond
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Marking points
B1 · 1 mark · Identifies 'carbon–carbon double bond' (C=C) as the main bond.
Worked solution
Alkenes contain a carbon–carbon double bond (C=C) between two of their carbon atoms.