1. Was your Pressure Conversion Have these in your notebook:
Warm-Up 1/17/14
Was your Pressure Conversion
worksheet handed in?
Have these in your notebook:
1 atm = 760 mm Hg
1 atm = kPa
760 mm Hg = kPa
Solve this:
7.13 atm = _____ mm Hg = ____ kPa
Will check four minutes after the bell.

2. Review Pressure unit conversions
Objective
-Understand the relationship between pressure and volume of gases (Boyle’s Law)
Agenda
Review Pressure unit conversions
-PhET Findings
Boyle’s Law

3. Review Warm-Up Solve this: 7.13 atm = _____ mm Hg = ____ kPa

4. Pressure Review

5. Pressure Review

6. Pressure Review

7. PhET Findings: P vs. V
↓V ↑P

8. PhET Findings: P vs. V
↑V ↓P

9. PhET Findings: P vs. V
↑V ↓P
↓V ↑P
Boyle’s Law

10. Initial Pressure x Initial Volume = Final Pressure x Final Volume
Boyle’s Law
Used to find a change in pressure from a change in volume or vice versa.
Initial Pressure x Initial Volume = Final Pressure x Final Volume
P1V1 = P2V2

11. Boyle’s Law: P1V1 = P2V2
From the video, the pressure of the room was mm Hg and the shaving cream occupied L. After the vacuum was turned on, the shaving cream expanded to occupy 2.45 L. What was the pressure inside of the bell jar?

12. Boyle’s Law: P1V1 = P2V2
1. I have added 15 L of air to a balloon at sea level (1.0 atm). If I take the balloon with me to Denver, where the air pressure is 0.85 atm, what will the new volume of the balloon be?

13. Recap ↑V ↓P ↓V ↑P As volume increases, what happens to pressure?
As volume decreases, what happens to pressure?
↓V ↑P

14. Exit Ticket
I’ve got a car with an internal volume of 12,000 L. If I drive my car into the river and it implodes, what will be the volume of the gas when the pressure goes from 1.0 atm to 1.4 atm?

15. Homework