Group Members James D., Mackenzie C., Natalia B., Pietro B.
Title To identify ways to speed up the reaction in the "Alka-Seltzer" cannon.
Purpose/Problem To identify ways to speed up the reaction in the "Alka-Seltzer" cannon.
Background Information alka-seltzer reacts with water to bubble and fizz, if you enclose the alka-seltzer and water in a bottle it will cause the cap to pop off
Hypothesis if the water in the capsule is hotter than the original temp then the reaction time will be quicker
Materials goggles, capsule w/ lid, water, hot plate, ice cubes, alka-seltzer tablet, timer, paper, pencil
Safetywearing goggles to protect your eyes
Procedure 1. put your safety goggles on
2. cut the alka-seltzer tab into 4 sections
3. then put hot, cold, or room tempature water into the capsule depending on what step you are on
4. quickly put the tablet into the capsule
5. put the lid on capsule
6. time how long it takes for the lid to pop off the capsule
7. record the time
Temp. of water||
Time of reaction||
Observations the alka-seltzer tablet takes longer to react when in cold water compared to room tempature water, and takes less time to react in hot water compared to room tempature water.
Analysis, Calculations, Trend Recognition, etc. the alka-seltzer tablet takes about 4 seconds to react with hot water and about 16 seconds to react with cold water
Results the hotter the water is the quicker the reaction time is.
Conclusion adding hot water to the procedure caused the reaction to happen quicker than if the tablet was in room tempature, and adding cold water to the procedure caused the reaction time to be longer than if the tablet was in room tempature water