To recap knowledge from year 9 about photosynthesis and develop understanding.

Carbon Dioxide + Water +(light energy) Oxygen + Glucose

1.Take two leaves and draw sketches of where the green chlorophyll is.

2. Place both leaves in a breaker of boiling water for one minute.

3. Turn off the Bunsen burner.

4. Half fill a boiling tube with ethanol and place the leaves in with forceps.

5. Place the boiling tube in the hot water and leave for 5 minutes.

6. Take the leaves out of the boiling tube and wash them with tap water.

7. Places the leaves on a Petri dish and add some drops of iodine to the leaves.

8. On your sketches make a note for which areas turn black.

What have you notices?

Sugar into starch

C6H12O6