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Mystery Mixture Lab

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During our chemistry unit, we examined 9 compounds (ascorbic acid, calcium carbonate, calcium chloride, citric acid, magnesium sulfate, sodium bicarbonate, sodium carbonate, sodium chloride, and sucrose). Out of those 9 compounds, a mystery mixture was made using 2 of them. I then identify which 2 compounds made the mystery mixture. In order to identify the 2 compounds used in the mystery mixture, I evaluated the physical and chemical characteristics of the compounds. From the physical appearance of the mystery mixture, it seems that there are only 2 types of compounds. You could see that there were only 2 because 1 of the compounds was very fine and powdery, while the other one was sandy and crystalised. I have determined the compounds in …show more content…
The first compound is crystallized and very gritty, almost like sand. The particles were translucent and about the size of a grain of salt. The second compound is very fine and powdery. Its particles were small and opaque. These compounds, citric acid and sodium bicarbonate, are in the mystery mixture, because if you put the 2 compounds together and put it aside the mystery mixture, they would look the same. Out of the nine compounds talked about in the beginning, I was able to determine that 4 of them were not in the mystery mixture, based on the physical properties. Those 4 were calcium carbonate, magnesium sulfate, sucrose, and calcium chloride. It was clear that these compounds were not in the mystery mixture because their physical properties did not match the physical properties of the mystery mixture. The calcium carbonate (chalk) was malleable and very fine, which made it stick to the vile. The mystery mixture did not stick to the vile. The magnesium sulfate (epsom salt) and calcium chloride (road salt) had particles that were way too big to be in the mystery mixture. Finally, the sucrose (white sugar) particles were in big chunks and did not look like the the mystery

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