Why should scientists debate the results of a scientific experiment

They should debate because the experiment result can differ from the first time. This is why you should always do your science experiment twice. Also it makes the scientist better so that they can improve in the future.

Because, I might get one thing for an answer, and you might get another. So you run multiple tests, and we compare our answers/ conclusions. 
And if both tests are different, we do it again, for maybe a 3rd or 5th time, then we would debate our conclusions, again.
Basically, make a poll, and see which one of us gets more agreeable answers.

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.