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Chemistry 8 Online
OpenStudy (anonymous):

Which is the most important question for deciding if a chemical reaction has occurred?

OpenStudy (anonymous):

Is their any answers to choose from?

OpenStudy (anonymous):

are there any answer choices? If not then ask yourself, has a new substance occurred? For instance, maybe a gas.

OpenStudy (anonymous):

The most important question: is the product chemically different than the reactant

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