CH-1236
Exothermic and endothermic reactions
Chemistry · Secondary 4 · Hard · Exothermic and endothermic reactions
Consider the combustion of ethanol:
Which statement about this reaction is correct?
Which statement about this reaction is correct?
- It is exothermic because more energy is released when new bonds form than is absorbed to break bonds.
- It is exothermic because no bonds are broken during the reaction.
- It is endothermic because oxygen molecules are broken apart.
- It is endothermic because heat is absorbed from the surroundings.
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