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# Plop, Plop, Fizz, Fast: The Effect of Temperature on Reactio

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## Rebecca Clay

on 18 November 2013

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#### Transcript of Plop, Plop, Fizz, Fast: The Effect of Temperature on Reactio

Plop, Plop, Fizz, Fast: The Effect of Temperature on Reaction Time
Objective
What does the effect of temperature of water have on the reaction time of an Alka-Seltzer tablet disintegrating?
Hypothesis
By making the temperature of the water a higher degree the Alka-Seltzer tablet will have a faster reaction time.
Materials
12 Tablets of Alka Seltzer
Thermometer
4 Cups of Hot Water
4 Cups of Room Temperature
4 Cups of Cold Water
3 Cups
Spoon
Stopwatch
Prodcedure
Have the three cups set out on a flat surface next to each other, but not to close. Fill them up with water, one with hot, the second with room temperature, and the third with cold water. Make sure you remember what cup has what type of water in it in case you did them in a different order than listed above. Next, use the thermometer to measure the temperature of each set of water. Make sure to record the temperature onto your data chart. It is recommended that you have someone other than yourself manning the stopwatch to be sure you get the correct and accurate time. After you have someone ready with the stopwatch drop an Alka-Seltzer table into each cup, one at a time, and tell your partner to start the stopwatch. Once you notice bubbles softly and gently stir the water in each cup, one at a time. Once the Alka-Seltzer tablet has disintegrated completely tell your partner to stop the stopwatch. Record your reaction time. You are supposed to time the reaction time in each cup separately. Repeat this three more times for a total of four separate trials on each type of water. Lastly, find an average on each type of water.
Results
Conclusion
The science fair project we chose to do is called Plop, Plop, Fizz, Fast: The Effect of Temperature on Reaction Time. For our hypothesis we stated that by making the temperature a higher degree the Alka-Seltzer tablet will have a faster reaction time. After doing four separate trials we came up with an average. These four trials and the average proved that our hypothesis was correct. The higher the degree of the water the faster the reaction time, the colder the water the slower the reaction time. This means the room temperature water had a reaction time that was in the middle of the reaction times of the cold and hot water. The average reaction time of the hot water is 22.2 seconds, the average reaction time of the cold water is a flat 53.0 seconds, and lastly the average reaction time of the room temperature water is 36.6 seconds. The improvement that we decided we would make to this experiment is the fact how easy it was to actually find the data. It was an enjoyable experiment, but we just figured that it would have been a little bit more challenging then it ended up being.
water
trial 1
trial 2
trial3
trial 4
average
hot
water
room
temperature
water
cold
water
20.8
sec
36.8
sec
56.7
sec
22.0
sec
37.7
sec
52.4
sec
23.8
sec
36.9
sec
52.3
sec
22.0
sec
34.8
sec
50.6
sec
22.2
sec
36.6
sec
53.0
sec
Full transcript