Ahh the old baking soda and vinegar trick you say? Well yes, but no volcanoes here. Instead we diluted a little paint in some vinegar, took a dropper and made some baking soda paintings all our own. If ever you wanted to wow your child with an amazing trick... this would be it.
Baking Soda/Vinegar Paintings
materials:
vinegar
baking soda
food coloring/paint
pie pan
eye dropper
get to work:
1. Cover the bottom of the pan with baking soda.
2. Pour about a 1/4 cup of vinegar into a cup (you'll need one cup per paint color).
3. Mix a few drops of paint/food coloring into the vinegar.
4. Using the eye dropper, drip a small amount of the vinegar mixture onto the baking soda.
what's happening:
Very simply put the vinegar is acidic and when combined with the baking soda (which is a base) a carbonic acid is created. This carbonic acid is unstable so it falls apart and becomes carbon dioxide and water. The bubbles you see is the carbon dioxide escaping. (Probably not the best explanation for a toddler, but definitely something a 10 year old could start to grasp).
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