Ice Cube Melting

1
Ice Cube Melting

• 11-28-09
• Science Fair
• Challenge to Excellence

2
Big Question

• What substance will melt ice faster sugar, salt,
  or pepper?
• I chose this experiment because I always
  wonder what I should use to melt ice on the
  roads. I know we use salt, but what if itd be
  quicker to use sugar or pepper.

3
Hypothesis
Hypothesis

• My hypothesis is that salt will melt ice faster
  because to melt ice on the streets, they use
  salt. I am not positive salt will melt ice faster
  because I am using table salt, not the rock salt
  which they use to melt ice on the roads.

My hypothesis is that salt will melt ice faster
because to melt ice on the streets, they use
salt. I am not positive salt will melt ice faster
because I am using table salt, not the rock salt
which they use to melt ice on the roads
4
Did you know
Did you know..

• Rock salt doesnt work well below 22 degrees F
• Most people use rock salt for their drive ways

• Rock salt doesnt work well below 22 degrees F
• Most people use rock salt for their drive ways

5
Experiment

• Procedure
• Gather materials and place an ice cube on the
  scale. Weigh the ice cube by itself.
• Add a substance on the ice cube and set the timer
  for 5 minutes
• When the timer goes off, take off substance and
  weigh again to see how many grams it melted.
• Write down data and repeat steps 1-4 to make
  sure data is correct.
• Write down data and communicate results.

• Materials
• 6 ice cubes
• 1 tsp. sugar
• 1 tsp. salt
• 1 tsp. pepper
• Timer
• Gram scale

• Variables
• Salt
• Sugar
• Pepper

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Observations

• After the 5 minutes, the sugar forms clumps on
  the ice
• Most of my ice cubes weighed the same(12 grams)
• In order to get the exact weight, the ice cube
  must be in the middle of the scale
• As the ice cube melted, the sugar and salt stuck
  to it

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Data
Substance Beginning weight of ice cube in grams After 5 minutes weight of ice cube on it Percent- age of melt age of ice cube
Sugar 12g 10g 1.2
Pepper 12g 12g 0
Salt 12g 9g 1.3
Nothing 12g 12g 0
Round Two
Sugar 10g 8g 1.25
Pepper 16g 16g 0
Salt 14g 11g 1.27
Nothing 14g 14g 0
Substance Average meltage Melts ice fastest
Sugar 1.225 No
Salt 1.285 Yes
Pepper 0 No
Nothing 0 No
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Analysis of Data
This experiment tested my hypothesis. I
know that because it did test if salt melted ice
fastest and it did. I learned that sugar could
also melt ice and pepper didnt do anything to
it.
9
Conclusion

• My hypothesis was correct because salt melted ice
  the fastest
• In my experiment, I would change some of the
  substances because pepper didnt melt at all. I
  want to know what does melt ice.
• Some new questions I have are
• Will breadcrumbs melt
  ice?
• What liquid melts ice
  fastest?
• Can salt melt a
  popsicle?

10
References
References

• http//www.infoplease.com/cig/science-fair-project
  s/substance-melts-ice-fastest.html
• about.com
• sciencebuddies.com

• http//www.infoplease.com/cig/science-fair-project
  s/substance-melts-ice-fastest.html
• about.com
• sciencebuddies.com