Compiled by Katie Allen from Millersville Univeristy, "Labs for gen chem that I've found that are free, don't require downloads, don't require sign ups."

General Chemistry Remote Lab Free Resources
Acid-Bases
Simulates addition of acid and base to a solution. No planned structure to this lab.
https://phet.colorado.edu/en/simulation/acid-base-solutions
Acid/base of water
http://employees.oneonta.edu/viningwj/sims/acid-base_properties_of_water_s.html
Cool lab that runs an actual titration for you with complete data. Requires instruction in how to use/what to run:
https://www.sciencebysimulation.com/chemreax/AnalyzerAB.aspx
pH scale and how it works. No structure.
https://phet.colorado.edu/sims/html/ph-scale/latest/ph-scale_en.html
https://phet.colorado.edu/sims/html/ph-scale-basics/latest/ph-scale-basics_en.html
http://employees.oneonta.edu/viningwj/sims/the_ph_scale_s.html
Ka expressions
Simple mix and match to see how K changes with diff acid/base strengths
http://employees.oneonta.edu/viningwj/sims/acid-base_reactions_s.html
Buffers
http://employees.oneonta.edu/viningwj/sims/preparing_buffer_solutions_s.html
http://employees.oneonta.edu/viningwj/sims/buffer_solutions_s.html
http://employees.oneonta.edu/viningwj/sims/common_ion_effect_s1.html
http://employees.oneonta.edu/viningwj/sims/ph_buffer_solutions_s.html
Titration curves – can vary acid/base strength and indicator
http://employees.oneonta.edu/viningwj/sims/titration_curves_s.html
https://chem.libretexts.org/Bookshelves/Ancillary_Materials/Interactive_Applications/ChemReaX%3A_Chemical_Reaction_Simulator/ChemReaX_-_Simulation_Dashboards/ChemReaX_-_Acid-Base_Titrations
Atomic Interactions/Nuclear Chemistry
http://employees.oneonta.edu/viningwj/sims/binding_energy_s.html
http://employees.oneonta.edu/viningwj/sims/radioactive_decay_s.html
http://employees.oneonta.edu/viningwj/sims/stability_of_isotopes_s.html
Lets you vary some conditions
https://teachchemistry.org/classroom-resources/half-life-investigation-simulation
Clear experiment – outlined well
http://web.mst.edu/~gbert/Nuclear_Decay/NuclearDecay.HTML
Atomic and Molecular Structure
Simulates distance between atoms of Ne, Ar, O. Some info on IMF. No planned structure to this lab.
https://phet.colorado.edu/sims/html/atomic-interactions/latest/atomic-interactions_en.html
Building an atom from p, n, e. Comes with info about symbols and a game to play.
https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html
Check out ISOTOPES and Atomic mass
https://phet.colorado.edu/sims/html/isotopes-and-atomic-mass/latest/isotopes-and-atomic-mass_en.html
This is moles and mass
http://employees.oneonta.edu/viningwj/sims/compounds_molecules_moles_s.html
Molecular shape and structure
https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html
https://phet.colorado.edu/en/simulation/molecule-shapes-basics
http://employees.oneonta.edu/viningwj/sims/determining_molecular_shapes_m.html
http://employees.oneonta.edu/viningwj/sims/determining_molecular_shapes_t.html
http://employees.oneonta.edu/viningwj/sims/drawing_lewis_structures_m.html
http://employees.oneonta.edu/viningwj/sims/drawing_lewis_structures_t.html
Polarity:
http://employees.oneonta.edu/viningwj/sims/determining_molecular_polarity_m.html
Balancing Chemical Equations
Game play. Comes with introduction to help.
https://phet.colorado.edu/sims/html/balancing-chemical-equations/latest/balancing-chemical-equations_en.html
Moles, mostly, and how it relates. Comes with a game play.
https://phet.colorado.edu/sims/html/reactants-products-and-leftovers/latest/reactants-products-and-leftovers_en.html
Light
Concentration lab, no structure. And Beer’s Law relating to concentration in a separate lab, no structure.
https://phet.colorado.edu/sims/html/beers-law-lab/latest/beers-law-lab_en.html
Abs/emission
What happens when electrons are excited:
https://teachchemistry.org/classroom-resources/exciting-electrons-simulation
http://employees.oneonta.edu/viningwj/sims/atomic_absorption_and_emission_s.html
http://employees.oneonta.edu/viningwj/sims/plancks_equation_s.html
Spectrophotometry
Complete lab!
http://web.mst.edu/~gbert/ColorScan/Spectrophotometry.HTML
Colorimetry
http://web.mst.edu/~gbert/color/colorExperiment.html
Concentration
Pretty simple, very straightforward.
https://phet.colorado.edu/sims/html/molarity/latest/molarity_en.html
Coulomb’s Law
Macro and atomic scale investigation into Coulomb’s law. No structure.
https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.html
Density
https://teachchemistry.org/classroom-resources/the-density-simulation
Energy
No structure to this lab. Needs a lot of guidance for students to understand what is going on.
https://phet.colorado.edu/sims/html/energy-forms-and-changes/latest/energy-forms-and-changes_en.html
Equilibrium
Simple labs, no planned structure
http://employees.oneonta.edu/viningwj/sims/equilibrium_constant_s.html
http://employees.oneonta.edu/viningwj/sims/equilibrium_expressions_s.html
http://employees.oneonta.edu/viningwj/sims/equilibrium_expressions_t.html
http://employees.oneonta.edu/viningwj/sims/disturbing_a_chemical_equilibrium_s.html
Slightly confusing:
https://www.cpp.edu/~jiselco/dynamicequilibrium/
LeChatelier: https://www.cpp.edu/~jiselco/dynamicequilibrium/
Throwing in a little chromatography and partition coefficients!
http://employees.oneonta.edu/viningwj/sims/chromatography_and_equilibrium_s.html
Gases
Simple P/T dependence on various simple gases
http://employees.oneonta.edu/viningwj/sims/gas_density_s.html
Ideal Gas law
http://employees.oneonta.edu/viningwj/sims/ideal_gas_law_s.html
Kinetic mol theory
http://employees.oneonta.edu/viningwj/sims/kinetic_molecular_theory_s.html
No structure to this lab. Needs a lot of guidance for students to understand what is going on.
https://phet.colorado.edu/sims/html/gases-intro/latest/gases-intro_en.html
https://phet.colorado.edu/sims/html/gas-properties/latest/gas-properties_en.html
IMF
Compares two hypothetical atoms to three hypothetical atoms to real atoms. Lots of ability to vary electronegativity of each hypothetical. No structure to this lab.
https://phet.colorado.edu/sims/html/molecule-polarity/latest/molecule-polarity_en.html
https://teachchemistry.org/classroom-resources/comparing-attractive-forces-simulation
Rate
http://employees.oneonta.edu/viningwj/sims/concentration_dependence_s.html
http://employees.oneonta.edu/viningwj/sims/the_arrhenius_equation_t.html
http://employees.oneonta.edu/viningwj/sims/determining_the_rate_equation_t.html
http://employees.oneonta.edu/viningwj/sims/temperature_dependence_s.html
http://employees.oneonta.edu/viningwj/sims/microscopic_view_of_reactions_s.html
Give syou control over variables
https://teachchemistry.org/classroom-resources/reaction-rates-simulation
Iodine clock reaction – complete experiment
http://web.mst.edu/~gbert/IClock/IClock.html
slightly confusing, but seems cool:
https://www.cpp.edu/~jiselco/dynamicequilibrium/
Periodic Trends
https://teachchemistry.org/classroom-resources/periodic-trends-electron-affinity-atomic-radius-ionic-radius-simulation
Redox
Super simple lab. No structure
http://employees.oneonta.edu/viningwj/sims/standard_potentials_s.html
batteries lab – complete experiment
http://web.mst.edu/~gbert/BATTERY/Anibat.HTML
electrochemical cells – complete experiment
http://web.mst.edu/~gbert/Electro/Electrochem.html
Solubility
Lets you play around with various concentrations of solute in low solubility solids.
http://employees.oneonta.edu/viningwj/sims/solubility_product_constant_s.html
solubility and the impact of pH
http://employees.oneonta.edu/viningwj/sims/solubility_and_ph_s.html
Solubility rules. V. straightforward
http://employees.oneonta.edu/viningwj/sims/solubility_of_ionic_compounds_s.html
Qualitative analysis, clear experimental details
http://web.mst.edu/~gbert/qual/qual.html
States of Matter
Super basic.
https://phet.colorado.edu/sims/html/states-of-matter/latest/states-of-matter_en.html
https://phet.colorado.edu/sims/html/states-of-matter-basics/latest/states-of-matter-basics_en.html
Thermodynamics
Super simple labs, no structure
http://employees.oneonta.edu/viningwj/sims/free_energy_and_temperature_s.html
http://employees.oneonta.edu/viningwj/sims/second_law_thermo_s.html
http://employees.oneonta.edu/viningwj/sims/thermodynamics_e_c_s.html
What are thermodynamic values of a reaction? Actually just like a reference table, but more interactive.
https://chem.libretexts.org/Bookshelves/Ancillary_Materials/Interactive_Applications/ChemReaX%3A_Chemical_Reaction_Simulator/ChemReaX_-_Simulation_Dashboards/ChemReaX_-_General_Reactions
Coffee cup calorimeter, clear experiment
http://web.mst.edu/~gbert/cupCal/Acups.html
Bomb calorimeter (no download necessary)
http://web.mst.edu/~gbert/cal/cal.html
Comprehensive labs
Given five samples, students must test and review what happens. Complete experiment, well thought out.
http://web.mst.edu/~gbert/droppers/droppers.html
Electrolyte solutions and conductivity
https://antoine.frostburg.edu/chem/senese/101/simulations.shtml