A student performs a reaction twice. In the second trial, she raises the temperature by 20ºC and notices that the reaction takes place more quickly. She concludes that the reaction must be endothermic. Explain why the student is incorrect.

Question

anonymous · Answer

Exothermic reaction is one where energy is released to the surroundings. 
Since giving the particles energy, resulted in Kinetic energy being transferred from the system (particles) to the environment, it is in fact releasing energy and hence is an Exothermic reaction.