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{Celery & Food Coloring Experiment} A classic... too cool.

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Celery & Food Coloring Experiment. Great website with projects and activities for kids.

Science Fair project ideas

Carnation color change experiment

2 liter soda bottle cut in half. Put about an inch and a half of warm water (w blue food coloring) in the bottom. Invert the top of the bottle with the lid on and fill with ice. Watch the water condensate and watch it "rain" THIS is brilliant!