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The reaction vessel will warm/hot to the touch. 'Exothermic' ; het coming out.

Conversely, if the reaction vessel feels cool/cold to the touch it is Endothermic ; taking in heat from its surroundings.

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lenpollock

Lvl 15
8mo ago
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Wiki User

12y ago

chemical reaction

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12y ago

If heat is released.

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Q: What are the signs of an exothermic reaction?
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