Photosynthesis Experiment

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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.

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