Chemical Bonding & Structure
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How atoms bond together — ionic, covalent, metallic bonds, molecular geometry, and intermolecular forces.
Ionic Bonding: Transfer of Electrons
How metals and nonmetals form ionic compounds
Covalent Bonding: Sharing Electrons
Single, double, and triple bonds between atoms
Metallic Bonding and the Electron Sea Model
Why metals conduct electricity and are malleable
Lewis Structures and Electron Dot Diagrams
Visualizing bonds and lone pairs
VSEPR Theory and Molecular Geometry
Predicting molecular shapes from electron pairs
Polar vs Nonpolar Molecules
Electronegativity differences and molecular polarity
Intermolecular Forces: Van der Waals, Dipole, and Hydrogen Bonds
Forces that determine boiling points and solubility
Hybridization: sp, sp2, and sp3 Orbitals
How atomic orbitals mix to form hybrid bonds
Resonance Structures and Delocalization
When a single Lewis structure isn't enough
Crystal Structures and Unit Cells
How atoms arrange in solid crystalline materials
Bond Energy and Bond Length
Measuring the strength and size of chemical bonds
Coordinate (Dative) Covalent Bonds
When one atom provides both bonding electrons
Hydrogen Bonding: The Strongest Intermolecular Force
How hydrogen bonds shape water, DNA, and protein folding
Molecular Orbital Theory: Beyond Lewis Structures
Understanding bonding through orbital overlap and energy diagrams
Band Theory: How Solids Conduct Electricity
From band gaps in semiconductors to metallic conduction