Joyce Borges
Science Fair Report
Bibliography
-Salt and Ice. (n.d.). Retrieved October 26, 2016, from http://mwvsciencefair.wikispaces.com/Salt and Ice/ -@. (2016). 10 Salts to Know. Retrieved October 26, 2016, from https://food52.com/blog/3377-10-salts-to-know/
-By using salt, that freezing point can be lowered which forces the ice to melt and prevents the water from freezing or re-freezing. (2013). Why Does Salt Melt Ice? - Ice Melter Distributor | Salt Supplier | KISSNER. Retrieved October 26, 2016, from http://www.kissner.com/why-does-salt-melt-ice/
-Newsome, K. (2014). Which Type of Salt Melts Ice Faster?? Retrieved October 26, 2016, from https://prezi.com/fbfqmnsismd3/which-type-of-salt-melts-ice-faster/
Problem Statement
Is table
…show more content…
Variables
Independent Variable: Type of salt used Dependent Variable: The amount of time it takes for the ice cubes to completely melt.
Control Variables: Type of container used, amount of light in the room, the temperature of the room, size of ice cubes, and the amount of salt sprinkled on the ice cubes.
Materials
The materials I need for this experiment are table salt, Epsom salt, kosher salt, sea salt, fifteen clear cups, ice cubes, and a stop watch.
Procedures
What I did in the science project war that In this science project I grabbed an ice cube tray and poured water in it. Then I put it in the refrigerator and let it freeze the whole day. I later got one ice cube and placed it in a plastic
…show more content…
It took Epsom, kosher, and sea salt took extra time to melt the ice. After conducting three trials for the table salt, its average time for melting the ice was 24 minutes. In second place came kosher salt with an average time of 31 minutes. Thirdly was the sea salt with an average of 33 minutes. Finally, the Epsom salt took the longest time to dissolve the ice cube with an average of 47 minutes.
Conclusion
This experiment was conducted to determine if table salt, Epsom salt, sea salt, kosher salt can be more affective in melting ice faster. After performing the experiment, my hypothesis that table salt would dissolve the ice cube faster than using sea salt, kosher salt, or Epsom salt was correct. The table salt took the least amount of time to melt the ice cube with an average of 24 minutes. Then came kosher salt with an average time of 31 minutes. Thirdly was the sea salt with an average of 33 minutes. Finally, the Epsom salt took the longest time to dissolve the ice cube with an average of 47 minutes. The table salt melted the ice faster than the kosher salt, and Epsom salt because a granule of the table salt is the smallest so there is more weight than the other 3 salts in equal volume. Also, the finer the salt particles put in contact with an ice cube, the quicker it will combine with the water forming the ice cube and begin the melting
Hypothesis: The Alka Seltzer will dissolve fastest in hot water and slowest in cold water.
Constant: the dependent variable was the size of the gummy bear after it was soaked in regular water, salt water, baking soda water,and vinegar.
This means that there are more collisions between the solid and liquid. Amount of tap water H2O used, i.e. volume (in ml) of the syringe. Amount of Alka-Seltzer tablets used, i.e. quantity of the tablets. one is used for the. Number of times the solution is stirred.
The hypothesis for this experiment was, If three different types of waters (saltwater, fresh water, tap water) are tested, then the liquids won’t evaporate at the same rate and tap water will evaporate at the fastest rate because it won’t have any non-volatile substances to hold it back from evaporating.
Repeat step 4 after another minute continue this for 5 minutes Beaker Start 1 2 3 4 5 Temperature change 1 59°c 57°c 56°c 55°c 52°c 50°c -9°c 2 72°c 71°c 66 °c 63°c 60°c 57°c -15°c 3 86°c 71°c 64°c 58°c 56°c 52°c -34° c 4 72°c 68°c 65°c 60°c 57°c 53°c -19°c Main Investigation ------------------ Aim To find out weather a beaker with a larger surface area cools quicker than one with a smaller surface area. Fair test To make it a fair test we will keep the following the same: Colour of tin - we will use clear beakers Amount of water - we will use 100ml
Then, repeat steps 7-11 another 4 times but with the room temperature water. For the room temperature water just leave it in the room but try not to change the room’s temperature. 15. Try to put all your recorded data into a table for organization 16. Repeat the entire experiment for more reliable data.
Pressure on the ice reduces the melting point. If pressure is afterward reduced, water will freeze again. This is called regelation. When a player skates across the ice, he or she applies a lot of pressure, leaving a trail of water where the blades were. Because the pressure leaves quickly, the water freezes to ice again (Haché 22). Nevertheless, pressure is not the only factor that causes this melting. Friction also takes part because it creates heat. With help...
The rate at which Alka-Seltzer tablets reacts with water Statement of problem The aim of the experiment is to find out the rate at which Alka-Seltzer tablets react with water. The input variable that I will change is temperature. The output variable will be measured by the time it takes for the Alka-Seltzer tablets to dissolve.
The temperature probe was placed into the test tube and recorded the temperature of the freezing solution using Logger Pro software. The test tube was held against the inner glass of the ice bath beaker so the test tube was visible to see when the solution froze over. Once the freezing point was measured, the temperature stopped being monitored and the data was recorded. The steps mentioned above for finding the freezing point, also known as ΔTf, was replicated for the 0.0, 0.4, and 0.6 concentrations. To find the freezing point depression, the equation ΔTf = imKf was used. The molality (m) of each solution was then calculated dividing moles of solute by kilograms of solvent, and the Kf value for magnesium chloride is known to be -1.86. Since magnesium chloride breaks down into three ions in deionized water, it was concluded that the Van’t Hoff factor couldn’t exceed three. For better accuracy, the experiment explained above for finding the freezing point depression and Van’t Hoff factor was re-conducted exactly the same to determine more accurate results. Again, the molality of each solution was calculated, and a graph expressing the change in freezing temperature verses molality
- Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.
These chemicals melt ice and snow by “lowering the freezing point of the snow-salt mixture” (Zhang) at the point of application. Before applying to roadways, liquid products are often added to abrasives or solids salts to not only make them easier to distribute, but to maintain contact with the roadways (AASHTO). According to the American Association of State Highway and Transportation Officials (AASHTO), “the most commonly used winter maintenance product is solid salt (NaCl), followed by salt brine and then sand or traction material” (AASHTO). Furthermore, liquid magnesium chloride and liquid calcium chloride were used by nearly 60 percent of respondent municipalities (AASHTO).
In a modern world, everyday things are used with much thought, like ice. People usually relate ice with the cubes they put in their drinks, and more notably the melting of the polar ice caps. But ice causes big problems in a large scale across the United States. Americans are faced with the problem of road ice, a cause of major road accidents in icy cities. A simple solution to this is road salt, but not many people know of its devastating effects to the environment, such as destroyed plant life, increased sodium chloride in watersheds, decreased water circulation in bodies of water, and much more (Stromberg, 2014). The purpose of this project is to research, find, and test an alternative solution to road salt by manipulating the pH of different
Methodology: A plastic cup was filled half way with crushed ice and mixed with four spoonfuls of 5 mL of sodium chloride. A thermometer was quickly placed inside the cup to take the temperature and the
they break and the ice melts. Liquid water does not necessarily have all four hydrogen bonds
PROPER IRRIGATIION CAN PREVENT SALT FROM BUILDING UP BECAUSE THE WATER CAN DRAIN THE SALTS AND SPREAD IT OUT SO THAT THE SALTS AREN’T CONCENTRATED IN ONE AREA!!!