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OpenStudy (anonymous):
Chemical bonds contain energy that can be released when they are broken true of fals?
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OpenStudy (doc.brown):
Not always. some reactions are endothermic (they require energy to change), think Ice Packs.
OpenStudy (gebooors):
Energy is needed to broke bonds. (Activation energy) In exothermic reaction, ,energy is released when new bonds are formed.
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