Which of the following does Electrons change when Electrons are changed?

Compare and contrast physical changes with chemical changes.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.