Phase change is based on the, which states that phase change occurs with changing average kinetic energy. a. Law of conservation of Mass b. Law of definite proportions c. Kinetic Molecular Theory d. law of multiple proportions

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.