Chemistry Fundamentals Mission
Build atomic literacy from the periodic table through electron configuration, Lewis structures, bond polarity, and balancing equations.
8 activities · Work through in order for a complete lesson arc
Periodic Table Explorer
Interactive periodic table with all 118 elements. Search by name or symbol, compare elements side-by-side, and view by category, electronegativity, phase, or orbital block.
Start here — patterns in the periodic table underpin all chemistry.
Electron Configuration Generator
Look up any of the 118 elements to see full electron configuration, noble gas shorthand, orbital box diagram, valence electrons, and oxidation states.
Lewis Dot Structure Builder
Enter a molecular formula to generate its Lewis structure with bonds, lone pairs, VSEPR geometry, and bond angles. Step-by-step valence electron counting.
Electronegativity & Bond Polarity Calculator
Select two elements to see electronegativity difference, bond type (nonpolar covalent, polar covalent, or ionic), dipole moment in Debye, percent ionic character, and partial charges. Interactive SVG shows electron density cloud shifted toward the more electronegative atom.
Balance Chemical Equations
Enter an unbalanced chemical equation and get integer coefficients, color-coded atom counts, and step-by-step verification that every element balances.
Molar Mass & Stoichiometry Calculator
Enter any chemical formula to compute molar mass, element breakdown with mass percentages, and step-by-step calculations. Supports parenthesized groups.
Atomic Emission Lab
Select elements and observe their emission line spectra. Explore the Rydberg equation, Bohr model energy levels, and flame test colors for hydrogen and other elements
Spectroscopy Lab
Shine light through solutions and observe absorption spectra. Explore Beer-Lambert law by adjusting concentration and path length to see how absorbance and transmittance change
Capstone — identify elements from emission spectra.