Today in chemistry, we took some notes on how to create valid experiments. (These notes can be found on moodle.) We learned the difference between indepenent, dependant, and controlled variables. We also began the alka-seltzer experiment. During part 2 of the experiment, we learned that the build up of pressure within the film canisters forced the top to pop off! We began to change the amount of water within the canister to see if that had an effect on the time it took for the lid to pop off.
|Alka Seltzer Rocket After Reaction|