Sunday, December 4, 2011


Title of the Lab: FACTORS THAT AFFECT RATE OF REACTIONS
The guiding question: Which amount of mentos will cause the largest reaction.
Hypothesis: We think the largest amount will have the biggest reaction.
What will our variables be?
-CONTROL (What will stay the same?): The bottle
-MANIPULATED (What will change?): The amount of liquid left in the bottle and the amount of the mentos.
-RESPONDING (What response are you looking for?): How the amount of mentos added changed the reaction.
LIST OF MATERIALS:
-Mint Mentos
-Coke Cola
- Graduated cylinder
-stop watch
-goggles
What Data will you be collecting? How will the amount of mentos added to the Coke Cola change the reaction.

1. Measure out 100 mL of coke into a graduated cylinder
2.  Place one mentos into the graduated cylinder
3. Measure the time the reaction lasts
4. Measure the amount of liquid left in the graduated cylinder
5. Repeat 1-4 adding one more mentos each time.  

Data Analysis:
Number of Mentos
Amount of coke at the beginning
Amount of coke at the end
Amount of time it takes for the reaction to stop
1 Mentos
100 mL
99 mL
30. 78
2 Mentos
100 mL
98 mL
30. 28
3 Mentos
100 mL
89 mL
27. 37
4 Mentos
100 mL
77 mL
21. 44
5 Mentos
100 mL
73 mL
19.29

Data Analysis:
Looking back on our predictions, we thought that the most amount of mentos would make the largest reaction. After we put in 5 mentos the coke fizzed and flooded over the bottle lasting 19.29 seconds. It then slowly fizzled back down leaving 73 mL of liquid left in the graduated cylinder. The graduated cylinder with five mentos produced the shortest and most powerful reaction and left the least amount of coke in the bottle. Looking at the addition of each mentos the data shows that adding an additional mentos each time increases the reaction although it reduced the reaction time and the amount of coke left at the end of the reaction.



Conclusion: After completing the lab we found out that our conclusions were right. The largest amount of mentos had the biggest reaction. Seeing as when more mentos were added the reaction was greater since it had more force, thus more bubbles.
Further Analysis:  If I were to do this experiment again I would use different mentos flavors and diet coke to have more accurate answers with more verity. I would have tried crushing the mentos to have a faster reaction when they hit the bottom of the bottle. I would have made each mentos drop more precise as in all together instead of one bye one.



Further Analysis:  If I were to do this experiment again I would use different mentos flavors and diet coke to have more accurate answers with more verity. I would have tried crushing the mentos to have a faster reaction when they hit the bottom of the bottle. I would have made each mentos drop more precise as in all together instead of one bye one.


1 comment:

  1. That's so interesting! I wonder why just one mentos would have a longer reaction time. Is it because there was less coke displaced during the reaction so it had more to react with? Good job on the collection and analysis of data.

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