1. Radon Science News Report
Grades are posted
Some of you didn’t include all requirements; fix it & turn it back in for a score.
IF you did not turn it in yet, please do so by end of day on Tue., 10/21/14

2. Access Tutorial Passes
Passes to come to my AT (or Plan Period) will only be given out according to the following:
A Student(s) with an appointment to see me
For a specific start and end time
For a specific discussion
Your group work is to be completed during your chemistry class period

3. Atoms…Matter
Atoms are too small to be seen with the most powerful microscopes
Scientists rely upon models to understand the atom.
Image of scanning tunneling Microscope retrieved from
Image of scanning tunneling Microscope retrieved from

4. Scientific Models
Scientists create models to visualize complex structures.
For small things, scientists must gather Indirect Evidence to develop their models.
With grateful appreciation to a fellow teacher for these and the next 2 slides.

5. What should a Model look like?
Scientific models may not always look like the actual object.
A model is an attempt to use familiar ideas to describe unfamiliar things in a visual way.
Portrait of Dora Maar seated
This is a painting of a young woman by Pablo Picasso. Does it actually look like a young woman?

6. PhET Atom Builder Sim Do: Work in teams of 2-3 (unless PCs fail)
Put: Everyone writes on their handout
Finish By: 45 minutes
When Done: Put the PC back.
If you finish very early…Begin the homework: Read & take notes p