Plant Oils And Their Uses Worksheet With Answers - George Pindar School Page 27
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36(b)
(i)
floats
1
(ii)
an emulsion
1
[5]
M7.
(a)
(i)
a vegetable oil has a mixture of fats
1
(ii)
corn (oil)
allow 229 to 268 (°C)
1
(b)
(i)
colourless
1
(ii)
rapeseed (oil)
1
because this oil has most unsaturated fat
or
because this oil has the most carbon-carbon double bonds
accept because this oil has least saturated fat
allow this oil has more unsaturated fat
ignore figures unless there is an indication that 88.6(%) is the
highest percentage of unsaturated fat
ignore melting points / smoke points
if corn oil or olive oil is chosen then allow 1 mark for has a high
amount / percentage of unsaturated fat or has a low amount /
percentage of saturated fat
1
(c)
(i)
(olive oil / molecules) decompose / break down
allow burn
ignore react
1
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