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6 Cards in this Set

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Animal and vegetable oils that contain.........fats can be hardened.

Animal and vegetable oils that contain unsaturated fats can be hardened.

B

Oils are hardened by a chemical reaction with.........gas.

Oils are hardened by a chemical reaction with hydrogen gas.

B

Rapeseed oil contains unsaturated fats. How could the students test the oil to show that it contained unsaturated fats?

Test: Add a Bromine/Iodine solution


Result of the test: If the Bromine is discoloured it will contain unsaturated fats.

B

One student claimed that hardening would make the rapeseed oil healthier. Explain why the student is wrong.

Hardening would increase the saturated fat.

B

To make margarine from olive oil the percentage of unsaturated fat needs to be decreased. Give a reason why.

To harden the oil, to solidify the oil, to increase its melting point

B

Describe how to decrease the percentage of unsaturated fat in olive oil.

React with hydrogen, using a nickel catalyst, at a temperature of about 60 degrees C.

B