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Does the shape of ice cube affect the rate of melting ?
38
The ice with the smallest surface area will melt the slowest.
The sphere-shaped ice melts the slowest
How does the shape of ice affect the rate of melting?
Outline
-Introduction & Objective
-Hypothesis
-Materials
-Methods
-Results
-Conclusion
-Questions
-Acknowledgments
Presented by: Melissa Angeles, Lim Bing Wen, Rachel Lim, Michelle Ng, Marcus Tan, Tan Yuh Zhen
Sources of error
Materials
Introduction
Factors that affect
rate of melting
-Uses of ice
-Chilling of beverages
-Causes dilution
5 different shapes of ice trays
- Temperature
- Surface area
Objectives
Star
Rectangle
Cube
Measuring spoon (10 ml)
Sphere
-To find out which shape of ice melts the slowest
Flower
Stopwatch
HypothesisHyHy
Hypothesis
Water
Refrigerator
1. The ice trays were filled with the same volume of water
2. The ice trays were placed in the freezer
3. The ice trays were taken out from the freezer simultaneously
Results
4. 1 ice sample from each ice tray was taken out simultaneously
Methods
Time(s)
Original
8. A graph was plotted to compare the rate of melting
Revised
Image
7. Rate of melting was calculated using the formula:
Table of results
-Measuring spoon not precise
-Only 10ml of water was used
-Difficult to see if the ice have completely melted
surface area(cm^2)/average time taken(s)
Image
volume(ml)/average time taken(s)
original
(original)
(revised)
6. Steps 3-5 were repeated 4 times. The average melting time of each respective shape was recorded.
Revised
5. The time taken for the ice samples to melt was recorded
Conclusion
References
http://en.wikipedia.org/wiki/Ice