My 10 year old has been experimenting in my kitchen! The other day he wanted to know why when he reacted bicarb soda and boiling vinegar in a container with some aluminium foil, the solution turned blue. I have no idea! Your help is much appreciated.
closed as too broad by Mithoron, aventurin, DrMoishe Pippik, M.A.R., Todd Minehardt Apr 12 '18 at 23:49
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