Question

conclusion for project topic separation of mixtures

Answer 1

CONCLUSION ::

When two compounds are separated chemically, the state of one of the compounds changes because of the chemical that is used to change the state of one of the compounds. For example, the HCl that was used in lab #1 reacted with the solid CaCO3 to change it to aqueous CaCO2. When two compounds are separated physically, the state of both of the compounds remains the same and different processes, like filtration and evaporation, are used. For example, the salt water was filtered from the sand in a funnel with funnel paper and the water from the salt water was evaporated when put over a hot plate. In a perfect world, when a mixture is being separated, the total mass of the mixture at the end of the lab should be the same as the total mass of the mixture at the beginning of the lab, because nothing is being taken or added to the compounds during the lab, but errors during the lab have to be accounted for (like the 1.92 grams and 2.1 grams total I had in my labs). The experiment could have been improved if more accurate scales were given and if there was a different way to remove the CaCO3 substance from the filter paper other than scraping it off because that leads to errors. Overall, these labs have helped me learn the answer the questions that were given in the purpose of my lab that are “What is a mixture?”, “How can I separate a mixture?”, and “What is the difference between separating a mixture physically and  chemically?”


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