1. Complete the Clicker questions on Gas Laws in the Teaching Ideas "Concept Questions for Chemistry using phET" posted by Trisha Loblein. Use the phET simulation Gas Properties to help answer the questions.
- What does this graph indicate?
- A. - Pressure and Volume are indirectly related and P1V1 = P2V2 - it's just adding one more
- B.
- C.
- D.
- What variables were held constant?
- A. Pressure and Volume?
- B. Pressure, number of particles, and Volume?
- C. Number of Particles and temperature? - because those are the ones that can't be changed.
- Volume, number of particles, and temperature?
- What does the graph indicate?
- A.
- B.
- C.
- D. X & Y are directly related and x1/y1 = x2/y2 - because it is just halved
- Which explanation could be used to explain the relationship between temperature and pressure for gases?
- A. Pressure depends on the number of collisions and if the temperature increases, the molecules increase speed, so they would hit the sides more and he pressure would go up.
- B. Pressure depends on the energy of collisions and if the temperature increases, the molecules increase speed, so they would hit the sides with more energy and the pressure would go up.
- C. Both help explain - They both help explain because it can depend on the energy of the collisions and the number of them.
- D. Neither help explain
- List the things that affect gas pressure and draw graphs and equations that shows the correct relationships:
- temperature
- Number of particles
- volume
- pressure
Listing all of the answers in the multiple choice questions was a great idea. It's nice to see the other options as well as the correct one. If someone who wasn't in this class looked at the answers and saw that you only listed "A", they may be confused but seeing the other possible answers makes it easier for a non-classmate to understand.
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