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Breakin the Ice with Salt and Sugar
Transcript of Breakin the Ice with Salt and Sugar
If sugar can melt ice like salt, then I predict that sugar would melt the ice cube faster or at the same speed as salt.
Question and Hypothesis
As shown in the data table, the ice cube with salt sprinkled on top melted faster than the ice cube with sugar sprinkled on top. The salt stayed just below the one hour mark, in the 50 minute range. However, the sugar took longer than one hour, around 20 minutes longer than the salt.
My hypothesis was incorrect. Throughout all my tests, the results stayed the same. The salt has melted its ice cube quickly, compared to sugar. On the other hand, the sugar also successfully melted the ice completely, but took longer. In conclusion, salt is a better choice for melting ice quicker.
In places with freezing temperatures and heavy snowfall, most people sprinkle salt onto roads, sidewalks, and driveways so ice won’t be present. This way, less people and cars are in danger of slipping or skidding. If sugar proved to be better, then it would benefit those populations even further.
1. First, get a ½ teaspoon of salt and sugar onto separate spoons.
2. Place the salt and the sugar onto separate ice cubes at the same time.
3. Start the timer immediately.
4. Record the time when the salt ice cube melted completely and the time when the sugar ice cube melted completely.
Breaking the Ice with Salt and Sugar
By Mikayla Obispo
The variables of my project are the substances I put on the ice cubes, which are salt and sugar.
½ teaspoon Salt
½ teaspoon Sugar
6 Ice cubes
1 regular spoon
1 measuring spoon that measures ½ teaspoon
The ice cube with salt on it melted more of its ice cube than the one with sugar in the first minute. The sugar melted very slowly, basically shrinking the ice cube, making ridges, tiny trickles of water, and crystal shapes on the edges. On the other hand, the salt melted quicker, digging into the ice and making a crater. This made the ice thin and fragile, which made it easier to melt.
Salt has been found useful for melting ice quicker and to prevent ice from forming. In addition to that they have also found that sugar may also work. How exactly does salt, and possibly sugar, counteract ice? Adding salt lowers the freezing and melting temperatures of water. You may think that water can still freeze below 32 degrees Fahrenheit/0 degrees Celsius, right? Actually, water doesn’t always freeze below its freezing point. The reason for this is, for the water to become ice; the molecules have to be in a specific form. For this molecule pattern to form, it needs to start at a nucleation site, like on surfaces containing water droplets, particles of dust, or vapor. They can also form in air bubbles or other particles of dust. This type of nucleation is heterogeneous. Water below the freezing/melting point usually isn’t able to form a nucleus, therefore, not being able to form ice crystals.
my mom, for helping me with the materials
my little brother, for starting the timer
my dad, for helping me with photography
my little sister, for being there and keeping me entertained during the hours of testing and giving me tips for my presentation
My project was about how applying sugar or salt to ice affects its melt rate. I planned to sprinkle half a teaspoon of sugar and salt onto separate ice cubes to see which would melt the fastest. Both ice cubes took about an hour to melt, which required patience. At first, I thought the sugar would do better, but I was proved wrong when the salt melted the ice cube quicker by about 25 minutes. This is due to the super cooling of ice below its freezing point and the lack of heterogeneous nucleation of water and ice.