Posted by Liz on Friday, September 25, 2009 at 6:43pm.
How can you do an experiment and not know if something dissolved or not? Calcium sulfate is the only one that is not VERY soluble. And calcium sulfate is not nearly as insoluble as many compounds.
we only used small samples and for most of the compunds they just stuck to the bottom. So are you saying that calsium sulfate is the only one that doesn't disolve?
Yes, all of the others are freely soluble.Put some sugar in a glass of water, stir, and see if it doesn't dissolve relatively rapidly. Do the same for table salt. They will NOT stick to the bottom. If your samples stuck to the bottom of the test tube, it's because they weren't stirred properly.
ok thank you
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