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In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes

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In this activity, learners discover that atoms and ions of different metals will change places.

1 cent - $1 per group Ages 11 - adult Under 5 minutes