On Wednesday and Friday we did experiments relevant to the types of changes certain molecular/the object itself can go through. For example, when we burnt the marshmallows, our science teacher explained why the burnt section was black and why it tasted so bitter. She said that the reason that the "outer layer" of the marshmallows were burnt and tasted bad was because the chemical make-up was altered and that it did not follow the formula made to create the actual marshmallows. On Friday I realized that the labs were to teach us about changes, chemical (burning, rusting) and physical changes (phase changes, breaking solids). I would like to say that the lab was successful, not only in the learning, but in the fun. The next lab was about burning sugar, in which is was about the same concept of the burnt marshmallows. Using prior knowledge, my group figured out that the make-up of the sugar changed because a new compound was formed. We could not figure out what the compound was, however. In the lab, we failed because we did not hold the cubes over the Bunsen Burner and the liquid did not expand. When our science teacher broke the test tubes, our group was allowed to feel the new substance. The horrible part about that was Nelly cut herself, technically revealing the rest of the group to a bio-hazard. This lab was also fun and I believe that every one learned about the different types of changes to the atomic/chemical structure of a substance.
http://pauljenkins.tv/blog/wp-content/uploads/2010/01/roasting-marshmallows.jpg
http://nutrihealth.in/wp-content/uploads/2008/05/sugar.jpg
