Two solutions are added together and the new solution becomes hot. This tells you that
A. a chemical change is taking place
B. the solutions are not soluble
C. the physical properties are the same
D. a gas is being produced

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.