# Gas Unit Review

The flashcards below were created by user JPalmer on FreezingBlue Flashcards.

1. What is the measure of average kinetic energy?
Temperature
2. Why are gasses easily compressable?
Gas particles are very far apart
3. What is the SI unit to measure pressure?
Pascal
4. What is standard pressure in kPa, atm and mm Hg?
101.3 kPa, 1.0 atm, 760 mm Hg
5. What 2 things does the KMT say that the particles of a gas do not have?
They have no volume and no forces of attraction
6. How is a real gas different from an ideal gas?
Real gas particles do have a volume and weak attractive forces
7. Under what conditions are real gases behavior most ideal?
High temperature and low pressure
8. A sample of which gas would be have most ideally?
H2 or CO2 Explain Why.
H2 because it is made up of smaller particles
9. As the temperature of a gas sample at constant pressure increases, the ___ increases
Volume
10. For a given volume of a gas, as the temperature increases, the pressure ____.
increases
11. Show the correct numeric set up to solve:
A balloon at 25 C has a volume of 18.0 liters. If taken outside where the temperature is 3 C, what is the new volume?
• 18.0 x 298 = V
• 275
12. Why must gas calculations always be done in Kelvin and not Celsius
There are no negatives or zero in Kelvin
13. As the temperature of a solution increases, the solubility of a gas _____
Decreases
14. Which will be more "flat", an opened can of warm soda or cold soda?
warm soda
15. As the pressure above a solution increases, the solubility of a gas _____
increases
16. When carbon dioxide dissolves in water, what is formed in the solution?
carbonic acid ( or H2CO3)
17. What term is defined as "when the vapor pressure of a substance is equal to the air pressure"?
boiling point
18. One can get water to boil at a lower temperature if the ____________
Air pressure is lower
19. The higher the boiling point of a substance , the _____ the intermolecular forces
stronger
20. The process of molecules leaving the surface of a liquid is called ____.
Evaporation
21. The vapor pressure of a substance changes with _____ and not the _______
changes with temperature and not the amount
 Author: JPalmer ID: 141741 Card Set: Gas Unit Review Updated: 2012-03-15 15:17:27 Tags: gas pressure Kinetic Molecular Theory ideal real vapor Folders: Description: Review vocab and reference table H for NYS Regents Chemistry Show Answers: