Chemical Bonding

Why do atoms stick together at all, and why in such particular numbers: two hydrogens to one oxygen, four to one carbon? Hand electrons from metals to non-metals to make ions, then build molecules yourself by joining atoms on the screen while their electrons pair up live. Learn to draw Lewis structures, use formal charge to pick the best one, see why ozone and benzene need more than one drawing, and finish with the atoms that break the octet rule and the sea of electrons that holds a metal together.