What have you learned about copper sulphate crystals and how to make them? Do you think this is a physical or a chemical change? Why?
What did you learn from the ziplock lab or the youtube clip about cabbage indicators? Why do you think that in both, things turned colour? Was this a physical or a chemical change? Why?
Wednesday, February 18, 2009
Copper Sulphate Crystals
If you liked the copper sulphate crystal lab and you would like a sneek preview of what the crystals will look like, try these links: http://chemistry.about.com/od/crystalrecipes/a/coppersulfate.htm
Acid Base Indicators - Lab from p18
If you liked the lab from page 18 of your textbook (ziplock, two powders and film canister), try watching http://www.youtube.com/watch?v=Xuo5r6HOXNM ! 
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