Wednesday, April 30, 2014

Dyed Flowers Science Experiment

"Look! The flowers change colour!" 

After observing the growth of mung beans, we conducted another experiment to learn about plants - dyed flowers with food colour!

I wanted to buy white roses for this experiment (since I like roses), but the price was a bit too steep, about SGD8 for 3 stalks of roses, so in the end I bought a bouquet of white chrysanthemum at SGD3.10 instead.

To show the contrast and to make comparison, we put half of the white chrysanthemum into a bottle of clear water, and another half into a bottle of water with blue food colour. For 250 ml of water, we added about 8-10 ml of blue food colour.  

I asked them to predict what would happen to the flowers. Though they may not have the scientific knowledge, they could guess that the flowers in the blue water would turn blue!

Yes, they have predicted / guessed correctly. In just a few minutes, the flowers started to turn from white to light blue. And after half an hour, that was how the flowers looked.




From this experiment, the children learnt that plants "drink" water. In addition, they learnt about plant parts - stem, flowers and leaves.

Other than white chrysanthemum, you can do this experiment with white carnations or white roses.

Shall I spend a bit more to make blue roses for myself?

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6 comments :

  1. Wow! I had never thought of such an experiment! so cool for kids! and the flowers look beautiful!

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    1. Thanks Amaia! The children were amazed. I was surprised by the effect too!

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  2. Oh wow that is amazing. That sounds like a fun experiment.

    Dropping by from UBC

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    1. Thanks Suzy for dropping by. It was a fun activity for the children.

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  3. We used to do that at school. Once we split the stem and put each part in a different dye, the flowers looked amazing!

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    1. Thanks Nick for sharing! We shall try that next time!

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