Written by This is an experiment about photosynthesis which is the process where plants use light to make sugar (glucose) that they can later use as food.
Materials:
- 500 ml beaker
- 3 petri dishes
- test tubes
- alcohol
- iodine (I)
- dropper
- forceps
- beaker tongs
- stove
- sugar and starch
- 3 leaves (1green, 1 white, 1 green and white)
- 25 ml beaker
Experiment:
- Fill the beaker with water until it reaches 300ml.
- Fill the test tubes with alcohol and insert one leaf in each test tube.
- Put the test tubes in the beaker and let it boil until the leaves lose their color.
- In the small beaker add water, sugar, and starch.
- Stir until all is dissolved.
- Put a few drops of iodine in the dropper.
- What is the color of the iodine?
Iodine is brown
- Add a drop of Iodine in the small beaker.
- What is happened to the color?
It changed from brown to indigo.
- This means that iodine +sugar = blue.
- Put each leaf in a petri dish.
- Wash it with water.
- Add a few drops of iodine.
- What is the color of the leaf?
Some leaves turn blue and some stay brown.
Conclusion:
Plants make photosynthesis.
Food is starch and sugar stored in the leaves
Please comment below if you have any comments or questions about this experiment.
