On Monday, we talked about the assessment, we took on Friday. I got all most all of the questions right. On the first one I got the main idea, but forgot to talk about energy. The second question, I did wrong, I did not set the equation up right. It was suppose to be 2500=m(4.18)(70), the 70 came from 100-30, 100 is the temperature of boiling water and the water dropped 30 degrees Celsius. So, the answer came to m=8.54kg. The third question we were suppose to talk about both mass and temperature and use the equation Q=m△T. So I pulled in the first mass and temperature in: 25(100)=2500, then I did the second mass and temperature and got 50(50)=2500. They have the same amount of energy. On Tuesday, we learned about boiling and the bubbles that are formed. Boiling is gas diffusion, particles move faster and spread out, and then more energy is added. The bubbles are particles of water, just further apart from each other and the volume is expanded and the density decreased, which makes it them float. As the one bubbles state changes the others start to join. The types of state changes are condensation, ice melting and steam. The mathematics of state changes are Eph→ Q=mc△T, then Eph→△Hrus→Eph of melting or freezing, Eph→△Hvap→ condensation or evaporating. This picture below, shows the different state changes of water.
On Wednesday, we had a shortened class. We learned that particle diagrams don't do a good job of representing the changes in energy. So we learned energy accounting. We recorded Thermal
→Eth before and after and Phase→Eph before and after. Then we record which is bigger on a bar graphs before and after and if energy came into the system of left the system. This picture blow shows some examples. (sorry I don't know how to turn it around.) Eth, thermal energy is the motion or speed of particles. Eph, phase energy is the state of matter change, the arrangement or distance between particles.
On Thursday, I was absent.
On Friday, I was also absent.
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