Below are pix. Yes, we spent some time discussing precipitates, solubility, and ion dissociation. Here is another lab with a chart and a brief discussion of the formation of precipitates. The kids each has different ways to keep the ions organized.
The kids are doing some reaction prediction along with Stoichiometry with the Can you make 2 grams? lab. However, for these double replacement labs, we need to understand solubility to predict the precipitate which forms. So, the kids are doing a Solubility Rules Lab with these ions. I took the ions from this solubility lab. Once again, I’m using chemicals I have on hand. I’ll post pix Thursday. The main idea is for kids to think critically and use deductive reasoning to understand which ionic compounds are soluble and which aren’t. The insoluble solids are the precipitates. Below are the chemicals I have on hand we’re using. You can give the kids either list to reinforce nomenclature or writing formulas. My kids are making their own charts before beginning the lab.
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