Explain why, food products containing fats and oils (like potato chips) are packaged in nitrogen.

7 State an important use of decomposition reactions. 8 What are anti-oxidants? Why are they added to fat and oil containing foods? 10 Give one example of a decomposition reaction which is carried out:

(a) with electricity

(b) by applying heat

11 What type of chemical reaction is used to extract metals from their naturally occurring compounds like oxides or chlorides?