Coding for the type of compound
3 marks · EasyState the definition of an alkane.
Give the code letters that indicate a chain of five carbon atoms in the name of an organic compound.
Write the ending used in the name of an alkene.
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(a) A hydrocarbon where all carbon atoms are joined by single covalent bonds.
(b) pent
(c) ene
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Marking points
B1 (a) · 1 mark · Defines an alkane as a hydrocarbon with all single (covalent) bonds between carbon atoms.
B1 (b) · 1 mark · Correct code letters ('pent') for a five-carbon chain.
B1 (c) · 1 mark · States the correct ending ('ene') used for alkenes.
Worked solution
a) An alkane is a hydrocarbon in which all carbons are joined by single covalent bonds.
b) 'Pent' is the code letters for a five-carbon chain.
c) Alkenes use the ending 'ene' in their names.