1. Group Lab Report By: Sorin Kalashian Emily Levine Ryan Leitner
Nina Franco
Sri Srinivasan
Sorin💝/All (everyone reads their name)

2. Question
What is the effect of the amount of Alka-seltzer on the distance the cap will travel?
Sri

3. Hypothesis
If we increase the amount of Alka-seltzer then the cap will travel farther because the force of the Alka-seltzer will push the cap. The more Alka-seltzer the more force there is to push the cap so it will travel farther.
nina

4. Controlled Variables (The variables that do NOT change)
The amount of water
The temperature of the water
The weight of the cap
The placement of the launcher
The angle of the launcher
Ryan

5. Manipulated Variable/Independent Variable
The amount of Alka-seltzer
Sorin💝

6. Responding Variable/Dependent Variable (The variable that is measured)
The distance the cap travels
Sri

7. Pictures Film canister Cap Launcher Water Syringe Alka- Seltzer
Emily
Syringe
Alka- Seltzer
Measuring Tape

8. Materials Water Alka-seltzer Launcher Film canister Film cap Syringe
Measuring tape
Data Table
nina

9. Procedure
Gather launcher, syringe, Alka-seltzer, water, measuring tape, and film canister with cap
Select a spot to place launcher mark the spot with tape
Place film canister in the launcher, tighten the film canister in launcher enough that it will not fall out but not enough to make a hole in the canister
Using syringe take 20 ml of water and squeeze in canister
Take a full Alka-seltzer and brake evenly in half
Holding the Alka-seltzer you just broke and the cap quickly put the half an Alka-seltzer in the water and shove on cap
Wait for cap to launch then measure the distance it traveled and mark it on a data table
Clean experiment up
Repeat steps 3-8 tw0 times with the launcher in the same spot you marked with tape
10. Repeat steps 3-4
Sorin💝

10. Procedure 19. Repeat steps 3-4
20. While holding two Alka-seltzer along with the cap quickly put the two Alka-seltzer tablets in the water and shove on cap
21. Repeat steps 7-8
22. Repeat steps with the launcher in the same spot twice
23. Compare data from all the different experiments
Emily/Ryan

11. Data Table: How Alka-seltzer Affected the Distance
Responding Variable: Distance the Cap Traveled
Manipulated
Variable:
Amount of Alka-seltzer
Trial 1
Trial 2
Trial 3
Average
½ tablet
505 cm
417 cm
531 cm
484 cm
1 tablet
529 cm
544 cm
613 cm
568 cm
1 ½ tablet
603 cm
450 cm
606 cm
553 cm
2 tablets
521 cm
462 cm
535 cm
506 cm
Nina

12. Graph
Emily

13. Conclusion/Results
Based on our results, we concluded that when we put in 1 tablet of Alka-seltzer the cap goes the farthest. We found that if you only use ½ of the alka-seltzer tablet there is not enough pressure to push the cap, but if you use 1 ½ or 2 tablets of Alka-seltzer there is too much Alka-seltzer and not enough water.
sorin

14. Additional Questions Why does the Alka-seltzer launch the cap?
2. What chemicals does the Alka-seltzer have in it that make it fizz up?
3. Why does the cap travel a different length each time you do the experiment with the same amount of Alka-seltzer?
Ryan

15. Glossary Hypothesis - Educated guess
Variable - Factor that may change or stay the same
Controlled - Managed
Manipulated - Changed
Dependent - Measured
Responding - Measured
Materials - Things being used
Procedure - Steps or order of what to do
Ryan

16. Photos
Sri