Two chemicals react in an endothermic reaction. what can be known about this reaction?
a: the new substance will need more energy to form its chemical bonds than the old substance will release.
b more energy will be released from the old substance than the new substance will need to form its chemical bonds.
c: a precipitate will form as a result of the reaction.
d: a gas will form as a result of the reaction.

Answer;

A: The new substance will need more energy to form its chemical bonds than the old substance will release.

Explanation;Endothermic reactions are types of reactions in which heat is absorbed from the environment. Therefore, the energy of the products is greater than that of the reactants, which means the enthalpy change is positive.When two chemical compounds react in a chemical reaction that is endothermic, the new substance formed which is the product will require more amount of energy to form its chemical bonds as compared to the amount of energy released by the old substance.