The dissolving rate of cool-aid

by: Alex Guevara

Background information. Whats the science behind this?

The solute is the substance that is dissolved: the powder are sugar in the case of Kool-Aid. The solvent is the substance in which the solute is dissolved in: water in this example. The overall experiment was if the kool-aid would mix in different temperatures of water faster or slower. This is because the temp of water effects the rate of dissolving
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Experimental design

  • hypothesis- i strongly believe that the cold water will allow the mix to dissolve faster rather than any other temperature of water.
  • variables- independent- temperature of the water Dependent- how fast the water mixes
  • constants- amount of water and the amount of mix used
  • materials-
  • 3 beakers
  • kool-aid mix
  • ice
  • hot plate
  • timer
  • thermometer
  • water
  • procedures-
  1. first pour half a cup of water into each cup
  2. heat up the water in one cup and cool down the water in another cup with ice
  3. next wait until both of the altered cups reach the intended temperature
  4. then add one teaspoon of kool-aid mix into each up and mix slowly for 7 consecutive turns
  5. finally record the data of the time it took each cup to mix completely
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conclusion

in this experiment i saw that mixtures dissolve faster when the solvent is warmer. i saw this because the water in my experiment was heated to over 90 degrees and the solute mixed in under 20 seconds which is an astonishing rate. One thing that i learned about this project is that yes, the dissolving rate between solutes and solvents does change if the concentration or temperature is altered. My hypothesis was wrong because i stated that the ice water would allow the cool aid to mix faster but it didn't because the mix stuck onto the ice making it more difficult to mix. You can use this in a real world application when making Kool-aid just boil the water first then mix then add ice and the mix will dissolve faster.