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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,...
Off Base
NOAAAdd to list DetailsIn this activity, learners explore the factors that tend to resist changes in pH of the ocean and why the ocean is becoming more acidic. This lesson guides inquiry into some properties of the ocean...
Natural Buffers
Oregon Museum of Science and IndustryAdd to list DetailsLearners use a universal indicator to test the amount of sodium hydroxide needed to change the pH of plain water compared with the amount needed to change the pH of gelatin. Learners discover that...
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...
Jell-O Model of Microfluidics
American Chemical SocietyAdd to list DetailsThis activity uses Jell-O(R) to introduce learners to microfluidics, the flow of fluids through microscopic channels. Using wooden coffee stirrers, learners create patterns to be cast in Jell-O(R),...
Magic Inks
Oregon Museum of Science and IndustryAdd to list DetailsLearners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions. One "...
Backyard Biodiesel
MakeAdd to list DetailsIn this activity, learners make a small batch of biodiesel that will work in any diesel engine. Learners use an old juice bottle as a "reactor" vessel to chemically process vegetable oil...