St. Michael's G.N.S. Arklow

Test for Starch

• We examined different types of food for starch.
• We dropped some iodine on the pieces of food.
• If the iodine stayed the same colour (yellow/brown) there was no starch present.
• If the iodine changed to a dark purple colour, there was starch present.
• All the foods rich in carbohydrates had starch. Foods like rice and potatoes.

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