How does a change in the temperature of the boiling point indicate that a chemical reaction has occurred?

A change in temperature is characteristic of a chemical change. ... If temperature increases, as it does in most reactions, a chemical change is likely to be occurring. This is different from the physical temperature change. During a physical temperature change, one substance, such as water is being heated.

If a reaction is a chemical reaction, then a change of temperature can be noticed, it can either be endothermic  (a decrease in temp.) or it can be exothermic (increase in temp.). Any kind of change in temperature of a substance is considered as a characteristic of a chemical reaction.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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