Let's have a great time using some old film canisters and Alka-Selter tablets to make rockets that blast from a chemical reaction. We will demonstrate how expanding carbon dioxide gas creates pressure. And have allot of fun while doing it!
Materials - Old Plastic 35mm Film Canisters - Water - Alka-Seltzer Tablets - Goggles - Some Towels - A Pan
Watch Video: Alka Setlzer Rocket Experiment
Process For Making Alka Seltzer Rocket Experiment
- Put on the goggles. - Open film canister and fill 1/2 with water. - Drop either half or a whole Alka Seltzer tablet inside. - Very very very quickly put the lid back on the plastic film canister. - Wait for the lid to blow off. - Repeat the process but this time place the rocket upside down with the lid on bottom. Set it in the pan to limit the mess. - Test out several different film canisters to find one that the lid does not fit too tightly on. If it's to tight it will have problems coming off and might not launch your rocket very well. So get a few different kinds.
Write down your observations. Here are some things to check. How long did it take for the reaction to begin? How long did it take to make the lid blow? You can experiment with different levels of water and amount of tablets (1/4, 1/2 , 3/4, 1) and record the results.
The Science of Alka Seltzer Rockets Experiment: When we mix the water and Alka Seltzer tablet a chemical reaction occurs with carbon dioxide gas building up. The pressure increases inside the canister until the lid is blown right off. Now get your friends and try the Alka Seltzer Rocket Experiment.