Day 1 — modeling in chemistry
posted by: lrose
modeling is a way of giving students experiences or relating the experiences they already have to get at the concepts in chemistry.
We use whiteboards to present our explanations of everyday phenomena.
1st. we did diffusion in air what is happening at the particle level – cologne
2nd. we did diffusion in a liquid. dye in hot water and cold water.
then we talked about pressure. filled up a tube with water why didn’t it pour out.
blow up the sealed garbage bag with 6 straws – raise a person off the ground.
lots of good data on a thumb drive. all the curriculum. s\
Showed the Eureka video – we show this . it is on you tube. other sites to see google : molo
google : tankerview or www.doctorslime.com also try phet or youtube. or concord consortium
This afternoon we will work on PVT problems
We worked with Vernier probes and compared the pressure with temperature, pressure with volume and pressure with amount of gas. We took our data and used the whiteboard to present our findings. We were each assigned one of the conditions and had to make a graph, draw a picture of what is happening with the representative particles and finally find a relationship between them( try an equation)
After the presentation we did worksheets that go along with these lab activities. We did one problem together and presented it on the white board
Discussion of temperature — we know from the video that temperature is a measure of the motion of the particles. So if there is no motion in the particles the temperature should be zero it is in fact from the lab extrapolated the teimperature to be -273 degrees celsius. so absolute zero is -273 K. If we have degrees celcius, then we must adjust the temperature by 273 then the units will be Kelvin. (K)
White boards are essential. My how time flies when you are engaged. It was 3:50 before we even realized .
Homework — oh no
take the ABCC– Assessment of Basic Chemistry Concepts
Read the 2 articles Socratic teaching — managing white board discussion
and great ideas and chemistry .
We are assigned to go over unit 2 and be ready to make a white board presentation by Friday– by our group.