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  • teachforkids

    I used this experiment to teach the scientific method and chemical changes. There is food coloring hidden under baking soda (food coloring is the suprice variable) then stir baking soda into a cup of vinegar. Following the steps in the scientific process

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Here's what you need: sandwich-sized ziploc bag (I used a generic brand and it worked fine!) 1/4 cup warm water 1/2 cup vinegar 1 tbsp. baking soda toilet paper Put baking soda in toilet paper to make a packet. Put water and vinegar in sandwich bag. Hold packet of soda toward top while you seal the bag. Shake bag to mix and set down quickly either outside or in sink.

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