SG/ Chem Blog FINAL

Over the last week and a half, we have done multiple things in sustainable green chemistry. The first this we did was a lab about heating curves, we also worked on formal lab reports on out PTVn labs about pressure temperature and volume. Then we learned about how to calculate the amount of energy used to raise the temperature of a substance by one degree Celsius.

Heating Curves:
In this experiment, we wanted to find how the temperature of water increased as we applied heat to it, what we found may surprise you. We found that as the water was heated, there were periods of time when the temperature would simply flat line, we realized that this was because the phase was changing.

*Example of a heating curve*

The temperature flat lined when changing phases because it takes a lot of energy to break molecules apart or to bring them together, so instead of raising the temperature all of the energy it being used in this case to go from ice to water, and from water to water vapor. To do this lab, we hooked a thermometer up to a mac and connected it to logger pro. Since Logger pro automatically plots the data, we only had to set up the table and then put the thermometer into a cup of ice water and turn on the heater.

Lab Report:

In class and at home, we have been working on formal lab reports for one of our biggest and most interesting labs. While I talked about the lab itself in a past blog I have not gotten a chance to write about the lab report. In the lab report I wrote about what I expected to see, what I did see and how the two compared. I also analyzed the data and thought of a couple scenarios that would have caused my data to be incorrect.

Calculating Energy:

 At first, I had trouble doing this, but then I realized that I was only having trouble because I was failing to do algebra. I spent a lot of time just racking my brain and I couldn't figure it out until I remembered all of the stuff I learned in algebra 1 ac. It also helped that my some classmates were understanding It so I could go to them for guidance.

Conclusion:

Over all, I had a great time this week and in all of SG/Chem. As the title said, this will be my last blog for a while and I have hoped you enjoyed it.