1. Welcome

2. Welcome to

3. Welcome to Dr. Chu’s

4. Welcome to Dr. Chu’s Vodcast

5. Today’s

6. Today’s topic is …

7. Gases Part A: Introduction Dr. Chu River Dell Regional High School

8.  So many things in life function on the principles associated with gases.

9. Elements that exist as gases at 25 0 C and 1 atmosphere

11. Website: http://www.harcourtschool.com/activity/states _of_matter/

12. Gases assume the volume and shape of their containers. Gases are the most compressible state of matter. Gases will mix evenly and completely when confined to the same container. Gases have much lower densities than liquids and solids.

13. Units of Pressure 1 Pascal (Pa) = 1 N/m 2 1 atm = 760 mmHg = 760 torr = 101,325 Pa = 101.325 kPa = 14.7 psi Barometer Pressure = Force Area

14.  Convert from 123,560 Pa to atm  Convert 45.7 psi to mmHg

15.  Convert 1.5 atm to mmHg  Convert 768 mmHg to kPa  Convert 235,620 Pa to psi  Convert 0.23 psi to torr

16.  Convert 1.5 atm to mmHg [1140 mmHg]  Convert 768 mmHg to kPa [102.4 kPa]  Convert 235,620 Pa to psi [34.2 psi]  Convert 0.23 psi to torr [11.9 torr]

17. Sea level1 atm 4 miles0.5 atm 10 miles0.2 atm

19. http://www.kentchemistry.com/links/GasLaws/manBar.htm