Chemical for consumers topic can be made more interesting when students bring canned or bottled food; tomato sauce or any food label and then categorise the food content into preservatives, antioxidants, flavouring agent, stabilisers, thickening agents and colouring agents.

Analysing food additive in a can of sardine
Analysing food additive in chilli sauce
Analysing food additive in peanut butter/chocolate spreac
analysing food additive in orange juice