Interactive Science Lab
Drag sliders, mix chemicals, and watch real science happen — no equipment required. New simulations are added regularly.
Visualize Avogadro's number, compare equal moles of different substances, and calculate molar mass with the interactive compound builder.
Launch simulation → CHEMISTRYConvert between mass, moles, and particles with step-by-step dimensional analysis and watch units cancel visually.
Launch simulation → CHEMISTRYExplore how chemists count microscopic particles using the mole and Avogadro's number.
Launch simulation → CHEMISTRYCompare equal numbers of particles in different substances and discover why their masses can be completely different.
Launch simulation → CHEMISTRYBuild your own mole conversions and follow the conversion pathway between particles, moles, and mass.
Launch simulation → CHEMISTRYBuild chemical formulas and calculate their molar masses using the periodic table.
Launch simulation → CHEMISTRYDraw a pencil line, weigh the graphite used, and calculate how many billions of carbon atoms you deposited.
Launch simulation → CHEMISTRYPractice multi-step mole conversions and see how dimensional analysis connects mass, moles, and particles.
Launch simulation → CHEMISTRYDrip base into acid, watch the flask change color, and read the pH curve live as you titrate.
Launch simulation → CHEMISTRYCompare everyday substances on the pH scale and discover what makes them acidic, neutral, or basic.
Launch simulation → CHEMISTRYExplore the pH scale and test substances using virtual red and blue litmus paper. Classify solutions as acidic, basic, or neutral.
Launch simulation → CHEMISTRYVisualize how Arrhenius acids and bases dissociate into ions in water and explore how ion concentration affects conductivity.
Launch simulation → CHEMISTRYCompare vinegar, salt water, and tap water and discover why some solutions are strong electrolytes while others are weak.
Launch simulation → CHEMISTRYSafely observe reactions between metals and acids, watch hydrogen gas production, and explore chemical equations.
Launch simulation → CHEMISTRYBecome an environmental engineer and neutralize acidic or basic industrial wastewater to protect the marine ecosystem.
Launch simulation → CHEMISTRYPerform a virtual titration, add base drop by drop, observe the indicator change, and identify the equivalence point.
Launch simulation → BIOLOGY & CHEMISTRYExplore how pH affects enzyme activity and discover why enzymes such as pepsin work best under specific conditions.
Launch simulation → CHEMISTRYAdd protons, neutrons, and electrons one at a time and discover which element, isotope, or ion you've built.
Launch simulation → CHEMISTRYChange the temperature or concentration and watch molecules collide faster to discover what speeds up reactions.
Launch simulation → CHEMISTRYExplore the solid sphere and plum pudding models and discover how scientists developed early atomic theories.
Launch simulation → CHEMISTRYFire cathode rays through electric and magnetic fields and watch the beam bend to discover the electron.
Launch simulation →Physics simulations are on the way — launch angles, gravity, and trajectories.
Astrophysics simulations are on the way — build your own solar system.