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Are all reactions exothermic or endothermic, whether slightly or strongly exo/endothermic? And on this topic, are all reactions with a positive delta H going to be endothermic and all reactions with a negative delta H going to be exothermic, despite forming or breaking bonds during the reaction?
Negative delta H means the loss of energy, negative delta H reaction is endothermic since heat is required to instigate the reaction. Likewise, it goes for positive delta H and exothermic reactions.
It's true that breaking bonds releases energy, but only apply this when the breaking of a single bond in a very simple reaction. Otherwise there are too many factors to simplify to just breaking or forming bonds.
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