Water is a polar molecule because A) water is a bent molecule and oxygen is more electronegative than hydrogen. B) oxygen is a nonmetal and hydrogen is a metal. C) the hydrogen atoms only have one electron each while the oxygen atom has 8 electrons. D) water is an ionic compound.

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.