Seperation of a Mixture Lab Report Essays

Seperation of a Mixture Lab Report Essays Seperation of a Mixture Lab Report Paper Seperation of a Mixture Lab Report Paper In order to operate the iron from the mixture, take a bar magnet inside of a Copilot bag, and swirl it through the mixture. 5. The iron will stick to the magnet, and lift the magnet out of the mixture. All iron in the mixture should be on the magnet. 6. The iron taken out of the mixture is then measured to find the mass of the retrieved iron. 7. Next, the salt will be separated from the mixture. In order to do this, a ring stand must be set up with an iron ring and a glass funnel. Take a piece of filter paper and fold it as demonstrated by Mrs Monotone, and place it in the funnel. 8. Place a mall beaker under the funnel for the filtered water. 9. Put the remaining mixture in the funnel. 10. Pour some water in a beaker, record the amount of water and pour it in the funnel. The mixture will begin to filter and drain the salt, leaving behind the sand. More water may need to be added depending on if the salt particles are fully dissolved or not. 11. The sand has been recovered. Take the filter paper, unfold it, weigh its mass, and place it in the chemical oven to dry before measuring. 12. While the sand is in the chemical oven, take a hot plate, and place the beaker tit the filtered salt water on the hot plate. The water will begin to boil, and eventually, the salt will be clearly visible and separated. 13. Once the salt is fully dried out, and no water remains in the beaker, remove the beaker with tongs for it will be extremely hot. Measure the beaker with the salt in it and subtract the original mass of the mall beaker to find the mass of the recovered salt. 14. The sand should be dry by now. Take the sand on the filter paper out of the chemical oven with extreme caution, place it on the scale, measure its mass, and then abduct the original mass of the filter paper in order to find the mass of the recovered sand. 15. The mixture is now separated into the three substances of sand, salt, and iron. Scientific Background: In order to complete this lab report, the following concepts must be understood. First, the difference between a mixture and a pure substance. A mixture is two or more pure substances combined, that keep their separate chemical identities and properties. The amounts of each pure substance in a mixture can change therefore the physical properties of a mixture depend on its composition, ND the composition of a pure substance is constant giving pure substances characteristic physical properties that do not change. Physical properties that are used to describe pure substances include solubility, magnetism, and boiling point, which are all characteristics used in this lab. The next concept is physical changes. Physical changes separate the components of a mixture, such as separating the iron, sand, and salt in this lab. Physical changes that can be used to separate mixtures include filtration, evaporation, and distillation. Mass recent composition is a way to express the real composition of a mixture by the amount of each component. In order to do this, the substances must be separated quantitatively. Lastly, percent yield which describes the efficiency of the recovery operation is calculated to separate the mixture. (Handout) Observations: The observations for this lab are as follows: The original mixture is a brownish color, and the difference between the different substances can easily be determined by sight. When the water was poured into the mixture of sand and salt during the filtration process, the altered water was coming through slowly in large drops. During the filtration process, the salt seemed to not be dissolving as quickly as thought, and more water was needed. When the salt water was being boiled, all of the sudden the water turned into what looked like foam and the salt started popping. When the sand was taken out of the chemical oven, salt particles that had not been dissolved were found on the bottom of the filter paper. The iron had a high magnetism, while sand and salt had none at all. The salt had a high solubility in water while the sand did not. The physica l appearance of the iron resembled rough tiny little black hairs. Data: The data for this lab is from data table B, as well as answers to post-lab questions 6 and 7. Data Table B: Separation of a Mixture: Mass of Original Mixture: 2. Egg Mass of Recovered Iron: . G Mass of Recovered Salt: . Egg Mass of Recovered Sand: . Egg Total Mass of Recovered Solids: 2. Egg Post-Lab Questions: 6. Mass percentage of salt: Mass percentage of sand: 46% Mass percentage of iron: 17% 7. Percent yield for salt = 46% Percent yield for sand = 47% Percent yield for iron = 29% Conclusion: Results: In this lab, the largest amount of recovered solids was the sand. The smallest amount of recovered solids was the iron. The total mass of recovered solids was greater than the original mixtures mass. Disunion: During this lab a mixture of the pure substances salt, iron, and sand were separated by different ways of physical change. The physical changes used in this lab report were filtration, evaporation, and distillation. The physical properties used in this lab report were magnetism, solubility, and boiling point. Error: The total mass of recovered solids was greater than the original mixtures ass. This could be because of inaccurate math or measurements. Also it was observed that in the chemical oven. Other ways that this lab could have obtained more accurate results would be using hot water during the filtration process instead of cold water. The hot water would most likely help to dissolve the tougher salt particles. The same filter paper used during lab was not the same filter paper that was measured for mass. This could have affected the ending result of mass of recovered sand, because the filter paper used could have been a different mass than the filter paper actually weighed.