1. Play the video for trial 1. Notice the temperature display also says "Timelapse: 15x normal speed". This means the video is sped up so that a 1 minute segment of the video shows something that took 15 minutes in the lab.
Why might it be useful to speed up the video for this experiment?

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.