Dancing Conversation Hearts

This activity allowed all of us to become scientists! Using baking soda, vinegar, water, and conversation hearts, we learned how to make candy dance!


Students first added a tablespoon of baking soda to their bowls, stirring, and watching it dissolve with the water. Then they carefully picked out a conversation heart and dropped them into the solution. Holding a ramekin, your little ones slowly poured in about 1/4 cup of vinegar.


Then we sat back and watched with super excitement as the hearts began bobbing up, down and all around the cup. When baking soda is added to the solution, carbon dioxide gas bubbles begin forming.  These gas bubbles stick to the conversation hearts, pulling them up as they rise to the surface. When the gas bubbles burst, the hearts fall back down until enough bubbles form to pull it back up again. The up and down movement makes it appear as though the hearts are wriggling and dancing.


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