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Put the beaker of water on the Bunsen burner and turn it off when the water is boiled.
Use tweezers to dip leaves in the hot water for 60 seconds
Add 20ml ethyl alcohol into a test tube and add the three leaves in the test tube as well.
Leave the test tube in the full water beaker for 10 minutes or until the leaves are almost white.
Remove the leaves from the test tube and wash it in cold water.
Place the leaves on the Petri dish and add an iodine solution. You will see the color of the leaves have changed from green to blue-black due to the presence of starch.
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