(all temperatures are in Fahrenheit)
HYPOTHESIS: If we add our reactants (alka-seltzer) to the water, then the reaction will change the temperature because of the ingredients in them.
RESULTS:
The room-temperature section of our experiment started exactly at 75 degrees. We recorded the temperature for 60 seconds. After 1 second, it dropped to 74.9 degrees. After 3 seconds, it went down to 74.8. At the 7 second mark, it went to 74.7. At 10 seconds, it dropped to 74.6. At 16 seconds, it went down to 74.5. At the 28 second mark, it went down to 74.4 degrees, 74.3 degrees at 40 sec. and stopped at 74.2 at the end of the minute.
We then performed the "cold" test. We put an ice cube in the cup and stirred for about 60 seconds. When we started recording for one minute (again), it quickly dropped from 77 degrees to about 50 in a matter of 10 seconds. It slowly sunk to 49.1 degrees after we put in an alka seltzer.
The last test we did was the hot plate test. We recorded the water on a hot plate for about 75 seconds (or until it rose to 122 degrees). Then, we took it off the plate, turned it off, and put in an alka seltzer. It gained 30 degrees in the time it took to add the seltzer again, so it stopped at about 142 degrees.
To sum it up, our reactants actually did very little to influence the temperature of the cold, hot, and regular water. There was never a change greater than two to three degrees.
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