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Colored Flowers
 
Absorption Experiment
Materials you will need:

• Water
• Scissors
• Food Coloring
• Container -Jar, Plastic Cup, Vase or Test Tube
• A Flower (light colored-white carnation) or Celery Stalk (with leaves)

This is a color changing experiment.

 
Steps
1.  Fill the cup with water.
2.  Add a few drops of food coloring
3.  Cut the end off the stem (stalk)
4.  Put the flower in the water

Watch and in time the food coloring will be sucked up the stem along tiny tubes (called vessels) and the petals of the flower will start to change in color.

Another way to try this experiment is to get a flower with a long, thick stem (or a celery stalk with leaves) and slit it carefully from the bottom and put each side in a separate test tube with different food coloring.  Your flower (or celery) should have petals (or leaves) of two different colors.

Did you know that plants need water to live?  As well as absorbing water from the atmosphere (air) through their leaves, they suck water up through their stems.  If you used the celery stalk for the above experiment you could cut the stalk and see that the little holes inside are colored.

     
                      Picture 1                                                Picture 2

    
                        Picture 3                                                  Picture 4

Picture 1 - Celery stalks that have absorbed blue food coloring.

Picture 2 - The left celery stalk has absorbed clear water and the right celery stalk has absorbed blue colored water.

Picture 3 - The left celery stalk has not absorbed the blue food coloring and the right one has.

Picture 4 - The celery stalk on the left side was not placed in the blue food coloring and the celery on the right has absorbed the blue food coloring.

 
 
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