Writerdaddy Posted June 20, 2012 Share Posted June 20, 2012 I can afford one $15 sub-unit of Mr. Q Chem right now, and my just8 yr old kids want to make "potions." Which one would be better, the unit on chemical reactions, or the one on solutions. Which unit comes first? Maybe that would be better. Solutions says it covers acid/base, and my kids are vinegar/baking soda virgins (or at least that's what I believe). Quote Link to comment Share on other sites More sharing options...
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