Class Update

Last week was a little different, with snow days and late starts. I forgot to post my usual updates. We did a lab activity to investigate chemical changes. We mixed several substances with either water or vinegar and measured the temperatures before and after to see if heat was being absorbed or released during a chemical reaction. We used Calcium chloride, baking soda, and Plaster of Paris. The next day we examined the differences between temperature and heat; in particular how the former is an indirect measurement of kinetic energy and the other involves the movement of energy from a hotter object to a colder object. Monday we will begin looking at the chemistry of nutrition.