Melting point

Did you know, if you add salt or ice to anything cold the temperature drops? In my experiment, I wanted to find out if different materials impact the rate of ice melting. Before starting this experiment, I know sugar and salt dissolve in water and sand turns into mud. I predict that the results of this experiment will be that the sugar and salt will make the ice melt at a faster rate than the sand because sugar and salt dissolve in water and sand does not. To complete this experiment I will…

Ice transforms at a point of degrees. This degree would be 32 degrees Fahrenheit or 0 degrees Celsius. It must be at this degree or lower to transform into ice. If it is higher than the freezing point of water, then it will be a form of water or ice melting into water. The different molecules, or also called the things that make up the ice or water, are more dense in cold water. They become dense and come to each other which makes them tight into an ice cube. When the ice gets warm, it moves the…

allowing the impurities of the solid to be removed while slowly crystallizing and the product. The melting point of the final recrystallized product was taken to compare and…

obtaining a compound’s melting point, and using infrared spectroscopy to analyze a compounds structure. Since no initial masses were given, percent yield cannot be determined. However, a relative analysis of the resulting masses of the compounds shows that the solution contained mostly aspirin, caffeine, and acetanilide in decreasing amounts, but since each compound contains the other compounds, this conclusion…

initial observation was the officials sprinkle salt only on roads that are icy . The question was what effect does salt have on the ice? Hypothesis was formulated, salt water will melt ice cube faster than the pure water because salt lowers the freezing point of ice in salt water. The prediction was ice cube melts faster in salt water than pure water. The following was the procedure of this experiment was: fill out 100mL water into each 250mL empty beaker, add 0.5grams of salt to one of the…

and glucose. The purity of glucose and ethyl cinnamate was measured through IR Spectroscopy. Melting point was used to determine the purity for cinnamic acid. Using the final amount for each ingredient, we determined the percent yields, which were 64.7% for glucose, 56.2% for cinnamic acid, and 38.8% for ethyl cinnamate. The melting point of cinnamic acid, tested twice, was consistent with the melting point of pure cinnamic acid. The glucose corresponded to the standard IR spectra, indicating…

one being ice cubes. Glaciers have been around almost since the ice age, and they still haven’t melted. Though, human inventions and so on are resulting in large ice structures melting faster by polluting the air. There are a lot of ingredients in liquids that could affect how an ice cube melts. There are also certain points about…

Discussion The findings in this lab show that the melting point of Alum is 92.5 degrees Celsius. During the first trial a temperature of 91.0 degrees Celsius was recorded, but during the second trial a temperature of 93.0 degrees Celsius was found. Averaging the two temperatures gives a total around 92.0. The literature melting point of Alum is said to be 92.5 degrees Celsius and the data from similar studies, such as, Chemistry 103: Synthesis of Alum, together show that the results from the…

color appeared in the reflux condenser, which is the visible liberation of nitrogen oxide gases. A total of 0.10 grams of purified benzil was produced from this reaction which contained a detected melting point of 82°C and a 34 % yield. This seemed to be approximately 10 degrees less than the ideal melting point of 94°C, which could be interpreted as deficiency of purity. The infrared spectroscopy, support this reasoning because shows a peak at 3316.65 cm-1, that appears to be a residues of…

faster. Since we did not use the fluted filter paper during the filtration some solvent evaporated resulting in premature crystallization and the solute stayed on the filter paper along with the impurities, making the percent recovered lower. The melting point obtained was 216.8-218.1…