When a ____ is produced in a chemical reaction we can prove that it is water (or a water-based ____) by using ____ chloride paper. The paper is ____ when dry, but turns pink when exposed to ____. You have to keep cobalt chloride paper very dry before you use it or it will react with the ____ in the air and turn ____ before you get it anywhere near a test tube. ____ (II) sulfate can also be used to test for water. Copper (II) ____ is a ____ powder when it is completely ____. In the presence of water it turns blue

SI 10.17 Describe a chemical test for water using copper(II) sulfate and cobalt(II) chloride.

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