This Powerpoint defines ionic and covalent bonding. It uses electron configuration and periodic trends to explain how and why ionic and covalent bonds form. It has great, colorful visuals to show how some atomic radii change as bonds form. It gives students an overview of the different properties associated with each bond as well. It also includes a bit on alloys and polyatomic compounds.
This presentation also shows students how to use electronegativity to predict a bond as ionic, polar covalent, or nonpolar covalent. Students learn to draw dipole moments on polar covalent molecules and predict the element with the NEGATIVE dipole. There are great visuals for that!