you heat two substances a and b both susbstances change color when cooled

Chemistry
Tutor: None Selected Time limit: 1 Day

substances a does not . what most likely happended.

a chemical change occured in both substances 

a physical change occured in substance a and a chemical change occured in substance B 

a physical change occured in both substances 

a chemical occured in substace a and a physical change occured in substance b 

Oct 3rd, 2015

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a chemical occured in substace a and a physical change occured in substance b 

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Sep 20th, 2015

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Oct 3rd, 2015
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