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OpenStudy (xx_nene21):
What must occur for a change to be a chemical reaction
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OpenStudy (photon336):
@xx_nene21 you start out with one substance and end up with another one for instance. H2 + 0.5O2 => H2O
OpenStudy (horsegirl27):
Welcome to OS! I'm sure no one will care this time, but next time check your section! In the upper left hand corner, you'll see you're in mathematics, so next time post in the proper section. Message me if you have any questions! :)
OpenStudy (unklerhaukus):
heat
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