What Makes Ice Melt the Fastest

1. What Makes Ice Melt the Fastest Justin Odom Ms. McIntyre Menchville High School Email: justin.odom@nn.k12.va.us

2. The problem was trying to figuring out which substance melted ice the fastest. My materials include: salt, sugar, sand, and pepper. Each material worked differently. The best results were from salt because it doubled the melting rate of ice. The salt worked as dissolving agent causing it to melt faster. The method used was comparing four substances melting rates, over a 15 minute time frame. Thy hypothesis was correct because salt melted the fastest over any of the materials used in the experiment. Salt melted three times faster than any other substance in this project. Abstract

3. Introduction Water continuously changes states among liquid, vapor, and ice. This continuous movement of water is called the water cycle. The water cycle involves the exchange of heat energy, which leads to temperature changes. Water becomes a solid with the decrease of heat or when it drops below 0 degrees Celsius. A solid melts with the increase of heat, or when the temperature reaches above 0 degrees Celsius. This process can be accelerated with the addition of a solvent, which can help increase heat energy. Of the four solvents being used for this test, 2 are compound that can be completely dissolves in water the other 2 are made up of larger molecules and cannot. I hypothesize that if i put salt (a compound) on then the ice will melt faster than with the other materials

4. Methods and Materials The materials needed for this experiment are ice cubes (approximately 18g each), � tsp each of salt, sugar, sand and pepper. You will also need an electric balance to weigh the initial mass of the ice and the melted water, identical plates to collect the melted water and a timer. To begin the experiment, you will start with weighing the ice on a dry saucer. After you get the initial mass of the ice cube, sprinkle � teaspoon of a material onto the ice. Set the timer for a fixed amount of time (15 min). Once the time has passed, pour off the melted water into a measuring cup, and use the balance to measure the mass. Subtract the mass of the empty cup, and you will have the mass of the melted water. Wait the amount of time for each test. After that measure the remaining mass of the ice cubes. Therefore repeat this three times for each substance tested. Use the same procedure to measure the melting rate of the ice cubes with nothing added. For each test, calculate the percentage of the ice cube the melted. [Mass of melt water/initial mass of ice cube] x 100

6. graph

7. Conclusion The purpose of this experiment was to find out what makes ice melt the fastest. My hypothesis was accepted because salt melted the fastest. Ice dissolves into ice which triples the melting process of ice. If u really want to do this experiment to find the exact result u have to get the correct data is to use a scientific lab.

8. Bibliography Lafferty, K. (2002, 11 10).�Science buddies. Retrieved from www.sciencebudies.org � Oleary, H. (2003, 11 10).�info please. Retrieved from www.infoplease.com Bullock, C. (2005, 11 10).�Burite. Retrieved from www.burite.com Morto, J. (2010, 11 10).�Ice city. Retrieved from www.icecity.com� Rae, K. (2009, 11 10).�Ehow. Retrieved from www.ehow.com

9. Acknowledgments Reliable mentor, Mr. Owen Devoted Mother Chira odom my siste