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Fill 'er Up!
American Association for the Advancement of ScienceAdd to list DetailsLearners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust. They blow bubbles into water, then use an indicator (bromothymol blue) to see that the water...
Carbon Dioxide Removal
American Museum of Natural HistoryAdd to list DetailsIn this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere. This process is a part of the carbon cycle and...
Hot Stuff!: Testing Ice
Integrated Teaching and Learning Program, College of Engineering, University of Colorado at BoulderAdd to list DetailsIn this demonstration, learners compare and contrast regular water ice to dry ice (frozen carbon dioxide). Both samples are placed in a solution of acid-base indicator. The regular ice floats and...
Hot Stuff!: Creating and Testing for Carbon Dioxide
Integrated Teaching and Learning Program, College of Engineering, University of Colorado at BoulderAdd to list DetailsIn this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas. The CO2 gas is trapped in a balloon, then blown through a straw into water with an acid...
Breathing Blue
Community Science Workshop NetworkAdd to list DetailsIn this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH. Learners also explore what happens when an acid (lemon) is mixed...
Ocean Acidification in a Cup
The ExploratoriumAdd to list DetailsOcean acidification is a problem that humans will have to deal with as we release more and more carbon dioxide into the atmosphere. This activity demonstrates how water can become acidic with the...
Shell Shifts
The ExploratoriumAdd to list DetailsOcean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity. The more acidic the ocean becomes,...
Indicating Electrolysis
The ExploratoriumAdd to list DetailsElectrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator. This activity also has helpful...
Mussel Your Way Through Photosynthesis
National Health MuseumAdd to list DetailsUsing zebra mussels (Dreissena polymorpha), elodea and an indicator dye, learners study the role of light in photosynthesis. A segment of the carbon cycle will be studied by setting up a closed...
Electrolysis
Oregon Museum of Science and IndustryAdd to list DetailsUsing electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution. A pH indicator (bromthymol blue) in the water allows learners to observe how the pH of the...