Lab
Fair Test Lab
Design fair tests at six science stations. Find hidden variables, collect repeated measurements, and explain your evidence.
Launch Fair Test LabChemistry
Build atoms, test solutions, and balance reactions in a virtual lab.
36 activities in 9 units · 3 simulations, 18 practice activities, 15 labsMeasurement4
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Lab
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Practice
Graph Doctor
Run the Graph Clinic: diagnose and fix sick lab-report graphs, then read them: values, slopes, trends and outliers. 10-question runs.
Launch Graph Doctor -
Practice
Conversion Railroad
Dispatch trains at the rail yard: couple conversion-factor cars so units cancel, then deliver the amount with the right sig figs.
Launch Conversion Railroad -
Practice
Read the Glassware
Run the lab's measuring desk: read cylinders, burets, rulers, thermometers and balances to the right digit. 10-question runs.
Launch Read the Glassware
Matter4
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Practice
Solution Smoothie Bar
Mix lab solutions to order: dose NaCl and fill to the mark, dilute stock with M₁V₁ = M₂V₂, and cool KNO₃ to see what crystallizes.
Launch Solution Smoothie Bar -
Lab
States of Matter & Heating Curves
Heat ice to steam on a bench that counts every joule, then zoom into the particles to see where the energy goes on each plateau.
Launch States of Matter & Heating Curves -
Lab
Solutions & Molarity
Weigh copper sulfate, fill a volumetric flask to the mark and dilute it; push KNO₃ past its limit and seed it; compare solubility curves.
Launch Solutions & Molarity -
Lab
Gas Laws Lab
Squeeze, heat and fill a gas cell to test Boyle's, Charles's and Gay-Lussac's laws and PV = nRT; time molecules with a speed analyzer.
Launch Gas Laws Lab
Atomic Structure5
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Practice
Isotope Mint
Work the Atomic Mint: count protons, neutrons and electrons, then find average atomic mass from isotope coins and mass spectra.
Launch Isotope Mint -
Practice
Neon Sign Shop
Run a glowing-sign shop: drop hydrogen's electron to make each colour, land photons on the spectrum and identify gases by their lines.
Launch Neon Sign Shop -
Lab
Atomic Spectra Lab
Make gas tubes, flames and streetlights glow, watch electrons jump between levels, and read line spectra, starlight and redshift.
Launch Atomic Spectra Lab -
Practice
The Quantum Kitchen
Build atoms to order with the right proton, neutron and electron counts, from neutral atoms to isotopes and ions. 10-question runs.
Launch The Quantum Kitchen -
Practice
Electron Configuration Boarding
Give every electron a room and a bunk, then write its configuration. Aufbau, Hund, Pauli, shorthand; AP adds ions. 10-question runs.
Launch Electron Configuration Boarding
Periodic Table4
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Practice
Trend Rankers
Judge the Periodic Talent Show: rank elements and ions by size, ionization energy, electronegativity and reactivity. 10-question runs.
Launch Trend Rankers -
Simulation
Periodic Table Explorer
Explore real data for all 118 elements, compare families, and watch periodic trends unfold.
Launch Periodic Table Explorer -
Lab
Flame Lab
Test known metal-ion solutions, then use emission evidence to identify four unknown samples, one a mixture.
Launch Flame Lab -
Lab
Mendeleev Investigation
Sort a family of alien secret agents, then place nine unknown elements the way Mendeleev did in 1869.
Launch Mendeleev Investigation
Chemical Bonding5
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Practice
Lewis Structure Workshop
Build molecules to order: count valence electrons, place bonds and lone pairs, then name the 3D shape your model snaps into.
Launch Lewis Structure Workshop -
Practice
Molecule Mixer
Run a molecule mixing bar: draw dipoles, call polar or nonpolar, pick the attractions, then watch beakers mix, layer and boil.
Launch Molecule Mixer -
Simulation
Ionic Bonding Activity
Form ions, fit puzzle-piece ions into neutral compounds, name them, and test crystals, lattice energy, and dissolving.
Launch Ionic Bonding Activity -
Lab
Ionic or Covalent? Properties Lab
Test melting point, solubility and conductivity at a virtual bench, watch the particles, and classify substances as ionic or covalent.
Launch Ionic or Covalent? Properties Lab -
Lab
Polarity & Intermolecular Forces Lab
Watch hydrogen bonds form and break, then measure evaporative cooling, boiling points, surface tension, layers and Rf.
Launch Polarity & Intermolecular Forces Lab
Reactions9
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Practice
Stoichiometry Bakery
Every recipe is a balanced equation: work mole ratios, grams and moles on a conversion train, find the limiting reactant and yield.
Launch Stoichiometry Bakery -
Practice
Le Chatelier's Factory
Run a plant of reversible reactors: predict how each stress shifts the equilibrium, then apply it and watch the molecules respond.
Launch Le Chatelier's Factory -
Practice
Reaction Matchmaker
Run a matchmaking agency for chemicals: classify the reaction, build the products from ion tiles, spot no reaction, balance it.
Launch Reaction Matchmaker -
Practice
Reaction Speedway
Race control for reactions: tune temperature, concentration, surface area and a catalyst to finish in the target time. 10-question runs.
Launch Reaction Speedway -
Lab
Reaction Rates Lab
Time the disappearing X, fizz marble and peroxide, fade crystal violet, and watch the colliding particles that explain every result.
Launch Reaction Rates Lab -
Lab
Chemical Equilibrium Lab
Watch reversible reactions run both ways molecule by molecule, then heat, cool, squeeze and add to them and watch them shift.
Launch Chemical Equilibrium Lab -
Lab
Chemical Reactions Lab
Weigh reactions in open and sealed flasks, collect the evidence, classify the five types, rank metals, and zoom in to watch atoms rearrange.
Launch Chemical Reactions Lab -
Lab
Moles & Stoichiometry Lab
Weigh real amounts and watch the mole ratio decide: balloons that stop growing, heating to constant mass, and gravimetric analysis.
Launch Moles & Stoichiometry Lab -
Practice
Balance That Reaction
Balance equations for General or AP Chemistry: tap arrows, type, drag tiles or pick, with a live atom tally. 10-question runs.
Launch Balance That Reaction
Acids & Bases2
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Practice
pH Pool Service
Treat pools and fish tanks that drift off their pH: pick acid or base, dial in the dose with a test meter, and read the pH scale.
Launch pH Pool Service -
Lab
Acids & Bases Lab
Test acids and bases with indicators and a pH probe, then titrate to find an unknown concentration (AP: weak acid titrations and Ka).
Launch Acids & Bases Lab
Thermochemistry2
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Practice
Hot & Cold Pack Co.
Design warming and cooling packs: pick the salt, dial the amount to hit the temperature, and build the energy diagram.
Launch Hot & Cold Pack Co. -
Lab
Calorimetry Lab
Heat metal samples, drop them into a calorimeter, and calculate specific heat to identify each one.
Launch Calorimetry Lab
Nuclear Chemistry1
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Simulation
Nuclear Chemistry Explorer
Build nuclei, explore decay and half-life, split and fuse atoms, weigh binding energy, and test radiation safety.
Launch Nuclear Chemistry Explorer
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