When an atom is attracted to another atom because it has an unequal number of electrons and protons, the atom is called an ION. If the atom has more electrons than protons, it is a negative ION, or AN ION. If it has more protons than electrons, it is a positive ion.
a medical doctpr can do a research or give medicine
in chemistry, solution is a special type of homogenous mixture composed of two or more substances.