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It is observed that the water in the conical flask wrapped with aluminum foil remained the coldest throughout the experiment.

Packaging material Temperature of the water in the conical flask (°C)
  Start 30 min 60 min 90 min 120 min
None 5 7.5 9.5 12 14.5
Aluminum foil 5.5 6.5 8 9 10.5
Plastic wrap 5 7 9 10.5 13

The graph below represents the results of our science experiment:

food wrap science fair project

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Complexity level:
Project cost ($):
Time required:
1 hour to prepare, 2 hours to perform the science project experiment
Material availability:
Very easily found. You will be able to find most of your materials at a local grocery store/supermarket. If you can't find conical flasks, you can improvise and use 3 large identical mugs
Safety concerns:

Basic safety requirements