October 28, 2016

Homework Help: Chemistry + possible answers

Posted by Moira on Thursday, September 11, 2008 at 2:46pm.

for question 2c earlier - Would you describe the effect of heat on the white powders as a physical change or a chemical change? give one reason for your answer. - My sister told me the answer would be for whichever one is more difficult to reverse but I don't know which one that is. I think it might be a chemical change but if the actual substance didn't change than it should be easy to reverse right?

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