Chemistry
The study of matter, its properties, how and why substances combine or separate.
Stoichiometry
The mathematics of chemical reactions. Balancing equations, limiting reactants, and yields.
The Periodic Table
Trends in electronegativity, ionization energy, and atomic radius across elements.
Organic Chemistry
Structure, properties, and reactions of carbon-based compounds. Functional groups.
Chemical Bonding
Ionic, covalent, and metallic bonds. VSEPR theory and molecular geometry.