2/28 MS Chemistry class and homework due 3/6

Hi folks,

Today we continued our discussion on states of matter by discussing why matter takes the different states that it does and getting a little more specific into what a solid is.   As part of our discussion of solids, we defined the terms, compression and tension.   In order to spend some time with this concept we did a challenge where students had to create a bridge out of popsicle sticks that had one end attached to the table and the other end had to go as far away from the table without touching the ground (See "The Bridge to Nowhere" in the .pdf for more information).   The students could quickly see how tension and compression were quite difficult to overcome.

By the way, I apologize but I didn't get a recording this week.  However, almost all the content in today's lecture can be found in the enclosed .pdf. 

For homework this week read the enclosed .pdf and answer all the questions at the end of the chapter.

ALSO answer the following questions based on today's lecture.

(If you missed today's lecture, feel free to look at the answers for the first 4 questions here.)

1.  What does temperature measure?

2.  As temperature goes up do molecules go faster or slower?

3.  Which state of matter tends to have the highest energy?

4.  Which state of matter tends to have the lowest energy?

5. What is the major difference between solids, liquid and gasses?

6.  What is the definition of tension?

7.  What is the definition of compression?

8.  The the "Bridge to Nowhere" challenge we did in class, where did you see tension and compression in the bridge?