Gas PropertiesGas Properties Chemistry: Gas Laws Review Learning Goals: Design experiments to measure the relationships between pressure, volume, and temperature.

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Presentation transcript:

Gas PropertiesGas Properties Chemistry: Gas Laws Review Learning Goals: Design experiments to measure the relationships between pressure, volume, and temperature. Create graphs based on predictions and observations. Make qualitative statements about the relationships between pressure, volume and temperature using molecular models. Previous knowledge: Students are able to describe a molecular model of gas pressure.

1.P 1 /T 1 = P 2 /T As pressure increases, volume decreases 2.Direct relationship between volume and temperature 3.PV = nRT 4.Law that allows for respiration! 5.Law involving the direct relationship between moles and pressure/volume New warm up paper Warm ups #4 (April) Number 1-7: Name the law… 1.Gay-Lussac 2.Combined Gas Law 3.Boyles 4.Charles 5.Ideal gas law 6.Boyles 7.Ideal

8. Whose Law? Gay Lussac Law

9. Whose law? BOYLE P 1 (V 1 ) = P 2 (V 2 ) 11. This is a direct relationship. True or False? F

10. Whose Law? Charles’ Law V 1 / T 1 = V 2 / T This is a direct relationship. True or False? T

11. Name the law… Boyle’s Law Allows for respiration!

12. What does this graph indicate?

13. What variables were held constant? A.Pressure and Volume B.Pressure, number of particles, and Volume C.Number of particles and temperature D.Volume, number of particles and temperature

14. What does this graph indicate?

15. 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 the 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 D.Neither help explain

16. What are the properties of gas? (#1 on study guide) 17. What units are used to measure pressure and what factors affects pressure? 1.Expansion: 2.Fluidity: 3.Low density: 4.Compressibility: 5.Diffusion and effusion: Atm, kPa, mmHg, torr Affected by: Kinetic theory (collisions) Pressure Volume Temperature

Absolute zero ygDP5shttps:// ygDP5s BArEkMhttps:// BArEkM

Math problems! Work on the gas law problems in your study guide, #23-34 –Solve on a separate sheet of paper (show work) and attach to study guide

List the things that affect gas pressure and draw graphs and equations that shows the correct relationships.

Gas Laws with just 2 variables P 1 V 1 = P 2 V 2 Remember that the other variables must be held constant