When chemical x is added to a certain liquid, it breaks down into chemicals y and z. it is not possible to simplify chemicals y and z more. why are chemicals y and z elements?

Which of the following statements is true about planck’s law

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

Ab c or d ? i’m not sure what the answer is