What new characteristic did John Dalton add to the model of the atom? A) An atom is a round, solid mass B) An atom has a massive, positive center C) An atom is made up of smaller particles D) An atom can join with other kinds of atoms

Astudent uses universal ph paper to find the ph of three solutions . solution a has a ph of 5 solution b has a ph of 11 and solution c has a ph of 7 identify which solution is acidic which solution is neutral and which solution is basic