Explain how science plays a key roll in STEM projects. How and why does research impact your understanding the topic that the STEM project is based on

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.

its b it was a compound

it has both hydrogen and oxygen