Elm investigate the presence of starch in food products

Yesterday afternoon, Elm class carried out experiments to find which food products contain starch and are therefore plant products. If a product contained starch then the food turned black when iodine was added. 

Leo Mbata stated that 'If the food turned black then we knew that it contained starch and was a plant product. We then knew that photosynthesis had occurred because starch is a type of glucose, produced in a plant when photosynthesis has taken place'. 

The children enjoyed comparing their predictions to the actual results and discovered that bread contained the most starch as it turned the darkest and drumstick lollipops did not contain any starch at all.