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workers in a chemistry lab


PhET™ Labs

The following screenshots represent selected simulations in Chemistry from the PhET labs. They are freely available from the PhET website and are easy to use and incorporate into the classroom. They are written in Java and Flash, and can be run using a standard web browser as long as Flash and Java are installed.

Online Activity Labs: Topics:
Acid-Base Solutions
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How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?

Details and get access to Acid-Base Solutions

Check out Acid-Base Solutions
Build a Molecule
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Starting from atoms, see how many molecules you can build. Collect your molecules and see them in 3D!

Details and get access to Build a Molecule

Check out Build a Molecule
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What determines the concentration of a solution? Learn about the relationships between moles, liters, and molarity by adjusting the amount of solute and solution volume. Change solutes to compare different chemical compounds in water.

Details and get access to Molarity

Check out Molarity
Molecule Shapes
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Explore molecule shapes by building molecules in 3D! How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare the model to real molecules!

Details and get access to Molecule Shapes

Check out Molecule Shapes
Balancing Chemical Equations
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How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

Details and get access to Balancing Chemical Equations

Check out Balancing Chemical Equations


Smart Science® Labs

Below, you will find a small selection from the Smart Science library of nearly 200 online science labs. View 15 labs designed for CSU general education chemistry courses. Use any of these labs free in your courses as part of the CSU system-wide virtual lab initiative.

Smart Science real online science labs provide instructors and students with uniquely hands-on real lab experiments instead of simulations. Students collect data interactively from real experiments point-by-point using their own care and judgment just as in traditional labs. They predict or hypothesize before or during the experimental activity.

The Smart Science approach ensures that students understand the nature of science, learn scientific thinking skills, and come to appreciate the complexity and ambiguity of empirical work. Smart Science labs include quizzes and online lab reports showing all student lab data and more.

Smart Science labs are delivered in HTML5 for compatibility with all modern platforms.

Online Activity Labs: Topics:
Chemical Reactions
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Real experiments in an exercise activity. Students observe reactions and see equation of the reaction. They determine reaction type.

Details and get access to Chemical Reactions

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Molar Volume
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Real lab. Students measure gas volume produced as equal masses of a reactant, metal or other compound, are added to acid.

Details and get access to Molar Volume

Check out Molar Volume link opens new window
Flame Test
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Real lab. Students observe various cations in a flame, including a spectrum, and conclude when flame tests can be used analytically.

Details and get access to Flame Test

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Acid-Base Titration
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Real lab. Student follow pH during titrations of weak and strong acids and bases. All eight combinations are provided.

Details and get access to Acid-Base Titration

Check out Acid-Base Titration link opens new window
Specific Heat
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Real lab. Students measure temperature change in a calorimeter as heat is electrically added to different liquids.

Details and get access to Specific Heat

Check out Specific Heat link opens new window

Please contact Smart Science at 855-4-SCIENCE (855-472-4362) or email us at to get started now.

For additional contact information and to learn more about Smart Science, see this announcement.


LearnSmart Labs

Created with the same world-class adaptive technology as LearnSmart, LearnSmart Labs is a revolutionary, outcome-based lab simulation. It assesses a student's knowledge and adaptively corrects deficiencies before they enter the real lab space. Students learn faster, achieve greater understanding of both conceptual and practical skills, and retain more knowledge so that their actual laboratory experience is more focused, less wasteful, and ultimately more successful.

Online Activity Labs: Topics:
Acid/Base: Equilibrium
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Students standardize a sodium hydroxide solution and use the standardized solution to determine the identity of an unknown weak acid using titration data.

Details and get access to Acid/Base: Equilibrium

Acid/Base: Stoichiometry
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Students standardize sodium hydroxide with KHP and use the standardized solution to titrate a sample of vinegar.

Details and get access to Cell Acid/Base: Stoichiometry

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The buffering capacity of solutions will be explored by making buffer and non-buffer solutions and comparing pH values as strong acid or strong base is added to each solution.

Details and get access to Buffers

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Two-part experiment: the calorimeter constant is determined and then used to determine the enthalpy of neutralization.

Details and get access to pH & Calorimetry

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The freezing point depression of a series of salt solutions is used to determine the van't Hoff factor for the salt.

Details and get access to Colligative


Chemistry Simulations in MERLOT sorted by sub-categories:

Website: Topics:
Screenshot of MERLOT


ADD Free Virtual Labs You're Using or Authored Into MERLOT

Are you using free Virtual Lab materials you found on the web in your teaching or your learning? Have you posted free Virtual Labs online that are open for others to use? We invite you to catalog these Virtual Labs you use or authored in MERLOT. Your colleagues and students around the world will thank you!


First: Become a member of MERLOT (It will take about 2 minutes and it’s FREE).

Second: Log in to MERLOT and click to Submit a Material. (It will take about 4 minutes the first time and step-by-step instructions for contributing materials to MERLOT are available).

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