Week 10

The past week in Chem was a bit of a shorter one since one day is wasn't there and one day we had a substitute teacher. We began the week on Monday by reviewing what we know about the motion of particles. We also knew that temperature can increase without a state change. Using this knowledge, we derived a lab that we would complete that day. In this lab, we would test what would have a greater effect on 200mL of ice water: 40mL of 50 degrees Celsius water of 80mL of 25 degrees Celsius water. We had a short discussion that resulted in knowing that the degree of hotness is the temperature, the quantity of hotness is heat, energy can be stored/transferred in different ways, but energy is energy. This would mean that heat is in fact not energy, but a way of transferring it. In this lab we simply used a large beaker to hold the cold water, then placed in the warmer waters with two separate trials. We then went on to discuss the lab results on Tuesday, and came to a consensus that the smaller amount of hotter water had a greater effect. Wednesday I missed class for a student leadership conference that was not a very good one. On Thursday, we did the temperature vs. energy lab. We began the lab. We ran two trials of beginning with the hot plate with 10 ice cubes in a beaker then turning it on. The temperature started at 0 degrees Celsius. We used a temperature probe and logger pro in order to record the measurements. After about seven minutes and 10 seconds, the water reached boiling point at 100 degrees Celsius. From this lab, we saw that as the energy increased(by heating) temperature did as well. This means that temperature and energy are proportional! To end the week on Friday, we had a sub. However, to hey instructions on what we had to do, we had a google+ hangout with Mr. Abud! It was the coolest thing. In class we did these things called phase problems, which were a graph with a line. The line had a triple point, where there were three lines branching off. The kind also divided areas where the liquids would be in different states. Unfortunately though, I did not understand them and will have to further my knowledge this upcoming week.