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Chemistry 10 Online
OpenStudy (justinc2003):

Which of the following can be true about a chemical reaction a chemical reactions can release heat <---------? b chemical reactions can take in heat c chemical reactions can create new products d chemical reactions never require energy

OpenStudy (sapphiremoon):

They all seem true except for D. There's no all of the above option? Reactions can be endothermic or exothermic (options A and B) and they create products from reactants, so that's C. Something about the question itself seems off.

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