The reactants are A

the substances present when the reactions begin.

B

the substances present when the reaction is complete.

C

the properties that change after the reaction.

D

the energy that is released or stored during the reaction.

pls, hurry

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space