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Physical Science

  • Carbon Snake In this teacher-directed demonstration of an exothermic reaction, students observe the dehydration of a carbohydrate using concentrated sulfuric acid. View »
  • Thermochemistry: An Endothermic Reaction In this thermochemistry demonstration, students observe an extreme, spontaneous endothermic reaction between 2 solid compounds, measure changes in temperature, and make observations. View »
  • Law of Conservation of Mass Use this inquiry investigation as an introduction to the conservation of mass or as a confirmatory investigation. View »
  • Let's Do S'more Chemistry! Your students can learn, have fun, and eat it, too! This laboratory activity explores the topics of stoichiometry and limiting reactants in a fun, delicious way. If you perform this activity with food products—which we highly recommend because making and eating the S’mores is a great way to cap off the activity—do so only in a dedicated classroom. View »
  • Equilibrium and Milk of Magnesia Rainbow This demonstration shows a colorful reaction that is a good introduction to Le Châtelier’s principle, solubility, stoichiometry, neutralization reactions, and reaction rates. View »
  • It's a Chemoween Celebration! Teach fundamental chemistry topics and have fun with these Halloween-themed demos and hands-on activities. Topics include acid-base chemistry, density, indicators, polymers, and more. Most demos and activities can be done with materials you probably already have on hand. View »
  • Penny Skins Find out exactly what a penny's made of with this quick and easy activity that can be used for elementary, middle or high school students. View »
  • What Goes On Inside a Spectrophotometer? A spectrophotometer measures the amount of light absorbed or transmitted as it passes through a sample, such as a solution containing food dye. Use this article to cover the basics of how a spectrophotometer works. View »
  • Equilibrium Straw Activity What is equilibrium? How is it reached? Many students assume that the concentrations or amounts of reactants and products—rather than rates—must be equal at equilibrium. This short lab activity helps to dispel that notion. View »
  • Kool-Aid® Chromatography Students encounter mixtures every day though they may not realize it. Use this chromatography activity to teach an important lab technique and introduce or reinforce key science terms and concepts. View »
  • Fractional Distillation of a Carbonated Soft Drink How is crude oil refined into many valuable products? Students can find out with this lab activity. Substituting a soft drink for crude oil, they use fractional distillation to separate the soft drink into its components, or fractions. View »
  • Molar Mass of a Molecular Compound by Freezing-Point Depression: A "Green" Chemistry Activity In this "green" experiment, organic solvents and solutes are replaced with water and sugar to eliminate odor and disposal issues. View »