The first part of the lab began by one lab member adding 10.0 mL of DI water to a test tube while another lab member obtained a beaker full of ice and salt. After both these steps were complete the test tube was put in the beaker full of ice. Immediately following the test tube be being placed in the beaker, a temperature probe was inserted into the test tube. The initial temperature was recorded and after the temperature was recorded in 30 second increments. Once the water exhibited supercooling and then remained consistent at .1 °C for 3 readings it was determined that the water had froze and formed crystals. Evidence that crystals formed allowed for it to be confirmed that the water actually hit freezing point at .0
In my project, I will do an experiment to find out which material makes ice melt the fastest while the temperature of the room will remain the same. This research is important because if you are short on ice and you need it you can figure out which material will make your ice last the longest if you have no insulation. For example, if you were in the desert and had a cooler you would know what to put in your cooler to make your ice last the longest. I will be testing with three different materials: steel, wood, and fabric. My hypothesis is if the steel retains the ice's cold temperature then it will take the longest for the ice to melt. My goal is to help cooler companies improve their coolers by outlining them with whatever material helps
The experiment will start with two ice cubes. One will have nothing added to it, the other will have ½ tsp of salt sprinkled over it. Each will be separate on two different plates/containers. Time will be kept with a stopwatch, and notes will be taken throughout the experiment on the percentage of ice that has melted at certain points in time.
2) When water freezes there are additional hydrogens bonds formed between molecules and those molecules become slow.
Maria’s hypothesis for this experiment is that the cold water will freeze faster, she thinks this is correct because the hot water molecules move faster than the cold water molecules, causing the hot water to take longer to freeze.
In 1932, twelve railroad cars were properly insulated to handle dry ice in a successful test. Unfortunately, during this test there were eight cars built with mechanical refrigeration that proved to be more affective than the early dry ice cars. They found the dry ice to be more affective in the transport of ice cream. With a temperature of -114deg F, Breyers Ice Cream in 1927 found dry
Get 2 basins, fill one with iced cubes and water, and fill the other one with warm
Ice is something we use and see every day, whether it is a block in our freezer or an icicle hanging from our roof. Ice is an important, yet subtle, part of our world. Ice is most commonly used to cool down our drinks and if you have ever noticed that ice in different shapes melt at different rates, then you are on to something. Ice with greater surface areas melt faster than ice with lesser surface areas.
Dry ice is a solid form of carbon dioxide that produces a cold dense mist. I first learned what Dry Ice was in fifth grade, this was due to the fact that my class had taken a field trip to River Legacy Park. Where we saw an experiment and learned facts about dry ice. This led to a fascination with dry ice, in this experiment I will test whether the temperature of water and soda affect when poured over Dry ice. Dry Ice has multiple purposes some of which, is chemotherapy, to carbonate liquids, store food, and accelerate plant growth. Since, I always liked the thought of working with Dry Ice I had begun to think of an experiment to do for the IA involving Dry Ice. After much consideration I choose to test how soda and water would
The structure becomes more open as water begins to expand as it reaches its freezing point. Water becomes lighter since the molecules are spaced out, creating an open structure. Ice being lighter than cold water allows water to flow underneath a layer of ice in the winter and keep animals and plants living in the water alive. Scientists are able to get super cooled liquid water by having very clean water samples. At temperatures below -38 degrees Celsius, scientists cannot keep water from freezing so they must use computer simulations. Putting water in nanoscopic pores keeps it from freezing at super low temperatures because the hydrogen bonds are broken down so the water is not as stable. Using sponge-like material to nano confine water was not successful because the large holes froze and caused crystallization throughout the material. This problem was solved when Sow-Hsin Chen created a new material called MCM-41. He and his colleagues filled the material with water, cooled it to –73 degrees Celsius, and bombarded it with neutrons. They were able to examine water’s structure without it
The first step needed to carry out the experiment, was to crush the dry ice into smaller pieces in order to fit into
If this experiment was to be completed again, there would be some changes and improvements I would make towards the experimental design that would benefit the outcome of results. One of these would be to use different temperatures rather than purely just iced water, room temperature and boiling water. This would potentially confirm the current results obtained even further and make it more accurate. One more change I would make would be too just purely complete more than three tests for each, this would cause there to be a greater sample size to compare each temperature water and confirm the current results, making it more accurate and giving a true average rate of
Have you ever wondered that if you put ice into a drink, the substances in the drink will make it melt faster. This is exactly the case, I will be seeing how the substances that we use in our everyday life affect the melting point of ice. I will be looking at what causes the freezing point depression, how substances affect the freezing point of ice, and the purposes of changing the freezing point of ice. The melting point of ice is the given temperature that a substance will melt, and by lowering this it makes the ice melt quicker. By learning this you can understand which substance to use to melt the ice off of your sidewalk, or even when making homemade ice cream.
The ice cube in the fresh water melted in 6 minutes and 7 seconds while the ice cube in saline water melted in 17 minutes and 14 minutes. There was more than a 10 minute difference in times between the solutions. Additionally, with the help of the food coloring, we observed that in the beaker containing saline water, there was a clear difference between the food coloring layer of fresh water and the clear water layer of saline water. However in the fresh water, the food coloring spread throughout the entire solution with it mixing
If I add salt to one of the bottles of water, but not to the other, then the bottle of water that had the salt will take longer to reach its freezing point.