Compare And Contrast Citric Acid And Baking Soda

Can you imagine 23 eighth graders figuring out what was in a Mystery Mixture only using nine chemicals. Eighth grade scientist were told that we needed to advance their learning. They had to look at all of the physical properties and think which ones it could be and which ones it was not. When they finally got to test the chemical properties they saw a better idea of what it could be or not. Then the eighth grade scientist got to test the temperature of the chemical reaction and by that time it was clear what it was.

The students think that it is Citric Acid and Baking Soda. They think it is that because when you look at the physical properties of Baking Soda you can see that has clumpy and had some big pieces which would be like the clumps in the Mystery Mixture. Another thing that Baking Soda has is that it is powdery and when you turned it their was some always sticking to the side which would be like the stuff that stuck to the sides of the vial for the Mystery Mixture. Those two pieces of data are important because the show that the two chemicals have the same Physical Property. When they looked at Citric Acids Physical Properties they saw that the texture was rough and kind of rocky that is important because the texture of Mystery Mixture was very similar. Another thing that they
When both Baking Soda and Citric Acid are put together the fizzing was faster at first then it started to slow down then it stopped. When they did both of those chemicals again they more looked at the bubbles they saw that the bubbles at first their were many but as it kept going the bubbles kind of stopped and then their were only some sitting around the edge of the well. The temperature of the Mystery Mixture and Baking Soda and Citric Acid are almost exactly the same. It would go up and then it stays the same. They think that this date helped them come to a final