Mystery Mixtures Lab Report

599 Words2 Pages

Introduction: What if one day in class your teacher handed you a vial with some kind of mixture in it and said: “Find out what's in it”? Well the 8th grade class at NFVMS were asked to do this. They first started out stating the physical properties like color, texture, size, and appearance. Using this method, the 8th graders came up with a couple different claims that had 2 or more substances in them. To find out what was truly in the mysterious vial they decided to test the chemical properties of their own mixtures to see if they would react the same way as the mystery mixture. They found the chemical properties by adding water to their mixtures and looking for things like change of color, the amount of gas released, and the temperature. …show more content…

Most of the class thought that the mystery mixture was Baking Soda and Citric Acid because of all the data they collected. To find out the physical properties they added chemicals they thought could be in the mixture and looked for similar attributes. Some specific things they looked for were the size of the chemicals, the color, and texture. The size of citric acid was about the same as grains of sand, the color was white and, it had a very sticky texture. The Baking soda stuck to the pieces of citric acid some physical properties on baking soda are, the texture is very powdery, the appearance looks like snow and, it is very small. When it came time to test the chemical properties the class looked for things like temperature, color change, and gas released. The class left a well tray with four different combinations including the mystery mixture. The next day they looked at the chemicals and the mystery mixture and the baking soda citric acid were the same color.The baking soda and citric acid along with the mystery mixture were a clear color. The class did a big group experiment to find that the temperature of baking soda and citric acid was 16.7ºC. As they looked at the gas being released they noticed that it kind of left a fog and when you stirred it slowly went

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