CK-12 Foundation
Ck 12: Physical Science: Covalent Bonding
[Free Registration/Login may be required to access all resource tools.] Definition of covalent bond, the compounds and elements they make up, and why they form.
ClassFlow
Class Flow: Ionic Bonding & Ionic Compounds
[Free Registration/Login Required] Ionic Bonding & Ionic Compounds - Objective - compare and contrast chemical formulas for ionic & molecular compounds.