2. Boyle’s Law Tracy Donatelli Stephanie Jalbert Period 2

3. Boyle’s Law Boyle's Law in motion. Pressure vs. Volume

4. PV=k  P is Pressure of a container  V is the Volume of a container  K is the Temperature of a container **temperature must be constant** Go back to question 2

5. P 1 (V 1 ) = P 2 (V 2 ) This is an inverse relationship because as one increases the other MUST decrease. Go Back to Question 1

6. Pressure  Units for pressure are: torrs (mm), atm, kpas. Definition: Force applied uniformly over a surface, measured as force per unit of area. **Pressure in Boyle’s Law acts as a syringe in most cases.

7. Volume Units for volume are: mL, L, cm 3. The amount of space occupied by a three-dimensional object or region of space.

8. Concepts of Volume and Pressure o If the number of molecules does not change, then the pressure is greater when the volume is decreased. o More collisions of molecules happen with other molecules in a certain time frame. o Temperate is constant so then the molecules move with an average speed.

9. Problem A If 10 liters of oxygen gas have a pressure of 1.2 ATM, What new volume will it occupy when the pressure is 1.8 ATM? V 1 =10 L V 2 =? P 1 =1.2 ATM P 2 =1.8 ATM Answer (10L)(1.2 ATM)=V 2 (1.8 ATM) (12 L/ATM)=V 2 1.8 ATM 12/1.8 = V 2 (ATM crosses out) 6.7 L = V 2 ***Click for answer*** Go back to question 3

10. Problem B  If 2.8 liters of Methane at 600 torrs of Pressure will exert what pressure when its volume is 1.6 liters?  V 1 = 2.8 L  V 2 = 1.6L  P 1 = 600 torrs  P 2 = ? Answer : V 1 P 1 = V 2 P 2 (2.8 L)(600 torrs) = (1.6L)(P 2 ) 1680 L/torrs) = 1.6 L P 2 1680/1.6 = P 2 (L crosses out) 1050 torrs = P 2 ****Click for answer**** Go back to question 3

11. Quiz Question 1 If Pressure increases, what happens to the volume? ☺A. IncreasesA ☺B. DecreasesB ☺C. Remains constantC ☺D.Blows upD.

12. Question 2 If volume increases what will happen to temperature in Boyle’s Law? ☮ A. Increases A ☮ B. Decreases B ☮ C. Does not affect Boyle’s Law (remains constant) C ☮ D. Not enough information D

13. Question 3 A 300 liter tank of Chlorine gas at 500mm pressure will exert what pressure when its volume decreases to 180 liters?  A. 2 mm A. 2 mm  B. 833.3 mm B. 833.3 mm  C. 833.3 atm C. 833.3 atm  D. 464.2 atm D. 464.2 atm

14. Summary As either pressure or volume increases/decreases, the other does the opposite. P stands for Pressure, and V stands for volume. Units for Pressure are atm, kpas, torrs, and mm. Units for Volume are cm 3, L, and mL. Temperature must remain constant.

15. Works Consulted http://www.grc.nasa.gov/WWW/K- 12/airplane/aboyle.html http://www.grc.nasa.gov/WWW/K- 12/airplane/aboyle.html http://www.chem.iastate.edu/group/Greenbowe/secti ons/projectfolder/flashfiles/gaslaw/boyles_law.html http://www.chem.iastate.edu/group/Greenbowe/secti ons/projectfolder/flashfiles/gaslaw/boyles_law.html http://mot.cprost.sfu.ca/`rhlogan/boyle.html http://dbhs.wvusd.k12.ca.us/gaslw/gas-boyle.html

16. You’re right!!! Go to Question 2

17. That’s right! Go to Question 3

18. The End

19. Correct!!!! Finished!!

20. You’re wrong Whoops! Go back to question 1 Go back to question 2 Go back to question 3