ol4doHkeboodjenn
ol4doHkeboodjenn ol4doHkeboodjenn
  • 16-10-2016
  • Chemistry
contestada

Which of there is an indication that a chemical reaction has occurred?
a. freezing of substance
b. a change in color of a substance
c. melting of a substance
d. boiling of a substance

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xnoorx xnoorx
  • 16-10-2016
answer is (b) , because a chemical change happened
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