Chemistry Study Guides for students. Essential Formulas, Equations and Units. This app will help students learn essential chemistry information easily. All info is categorised as bellow: SI Fundamental Units Ionic Solubility Chart Strong Acids and Bases Activity Series Flame Colors Phase Changes Solution Colors Thermodynamic Laws Thermodynamic Formulas Constants Quantum Mechanical Formulas Laws of Quantum Mechanics Quantum Numbers of e− Atomic Properties Boiling Points of Molecular Compounds