What are ions?
an atom or molecule with a net electronic charge due to the loss or gain of electrons
How do ions form?
as the loss/gain of electrons provide electronic stability by creating a fuller outer energy level
What does not change?
the number of protons + neutrons
What do metals lose?
they lose electrons to form positive ions
What do non-metals gain?
they gain electrons to form negative ions
What do non-metals have a large number of?
they have a large number of electrons in the outer energy level
What do non-metals gain to fill?
they gain electrons to fill that energy level