Chemical Change Lab Report

In Mr. Carlson’s class, my peers and I executed a lab. The purpose of this lab was to decipher whether or not a substance would change into a completely new substance by adding heat to it. I hypothesized that if I were to apply thermal energy to a substance, then it will change into a new substance. After the lab was complete, I found out that my hypothesis was supported by the data collected. To start off, the lab the fire heated up the substance forming a condensate in the inside of the test tube and a gas in the water bottle, which was heated out of the unknown substance. The reaction of lighting the fire and heating the unknown substance was that two new unknown substances formed. When the new substances formed, a chemical change occurred. Before the tannic acid, the unheated substance’s texture was fine and loose, with a white color. Though, the heated substance’s texture was coarse and clumpy, while the color was an off-white. Then,

A plant uses photosynthesis to create sugar for their own use. During this process, they are taking six water molecules and six carbon dioxide molecules, along with sunlight and making sugar and left over oxygen. These three factors combine to make two substances. This would be a synthesis reaction, due to the fact of many small things combining and making up a larger one. On the other hand, there is decomposition reaction. An example, could be a bag of a trail mix. If you decide you do not want trail mix and want to use each substance later and separate the mixture, you will have peanuts, chocolate, and raisins. That trail mix went from one larger mixture to three smaller substances. Like that trail mix, this unknown substance went from being one solid to being a solid, a liquid and a gas. Afterwards, when all teams were done, we compared the data collected. Such as, the color changes and the endothermic and exothermic