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Review: Gases Packet

Review: Gases Packet. Describe particle motion of a gas. Motion – continuous, random motion. Who’s Law states: P 1 V 1 = P 2 V 2. Boyle’s. What happens at absolute zero?. All molecular motion stops. describe the volume of gases. Volume – NOT definite.

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Review: Gases Packet

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  1. Review: Gases Packet

  2. Describe particle motion of a gas. • Motion – continuous, random motion

  3. Who’s Law states: P1V1 = P2V2 • Boyle’s

  4. What happens at absolute zero? • All molecular motion stops

  5. describe the volume of gases. • Volume – NOT definite

  6. Who’s law can be used to extrapolate absolute zero? • Charles’ law

  7. Using the KMT, explain what happens to the pressure of a gas when the volume decreases? • As volume decreases, gas particles have more collision w/ container walls, therefore causing a HIGHER pressure

  8. Why can gases be compressed while solids cannot? • B/c gases have A LOT of space between particles to be pushed together while solids DO NOT have a lot of space between particles

  9. _______ is where gas particles can pass through tiny openings • Effusion

  10. At what temperature does absolute zero occur? • 0 K or -273C

  11. explain what happens to the volume of a gas when the temperature increases and pressure is constant? • As temp. increases, volume increases!

  12. Who’s law states: V1_= V2__ T1 T2 • Charles’ Law

  13. Who’s law would you use if a gas was collected over water? • Dalton’s Law

  14. Which letter represents where the vacuum is? B • B A C

  15. ______ is a gas that DOES NOT behave according to KMT • RealGas

  16. Who’s law states: Pdrygas = PtotalPwater vapor • Dalton’s Law of Partial Pressures

  17. Define Boyle’s Law. • Boyle’s = volume & pressure are INVERSELY proportional @ constant temp.

  18. What does a barometer measure? • Atmospheric pressure

  19. What causes a gas to exert pressure? • Collisions with any surface (more collisions = more pressure)

  20. List 2 ways atmospheric pressure can be affected? • Weather • Elevation

  21. What gas law is represented by the following graph? Graph A • Charles’ Law

  22. How can the height of the Hg be used to measure atmospheric pressure in a Hg barometer? • The pressure of the atmosphere is directly proportional to the height of Hg in the column

  23. What Law states: _P1V1 = __P2V2T1T2 • Combined Gas Law

  24. What are 2 causes of non-ideal behavior of gases? • HIGH pressures • LOW temperatures • Both force gas particles to have a lot of IM forces

  25. What force is pulling down on the column of mercury in a barometer? • Gravity

  26. _______ is an imaginary gas that conforms to KMT • Ideal Gas

  27. If the volume of a gas is doubled, what happens to the pressure at a constant temperature? • Pressure is HALVED!

  28. Describe particle spacing of a gas. • Spacing – very far apart

  29. What will happen to the column of mercury, if atmospheric pressure decreases? • DECREASES!!

  30. List the PRESSURE values for STP. • 101.3 Kpa • 760 torr • 760 mm Hg • 1 atm

  31. What gas law is represented by the following graph? Graph B • Boyle’s Law

  32. describe the shape of gases. • Shape – NOT definite

  33. _______ is the Spontaneous mixing of particles • Diffusion

  34. IF the temperature of a gas is tripled, what happens to the volume at a constant pressure? • Volume is tripled

  35. Which gas (ideal or real) is used in the study of the different gas laws? • IDEAL!

  36. List the TEMPERATURE values for STP. • OC, 273 K

  37. Define Charles’ Law. • Charles’ = volume & temp. are DIRECTLY PROPORTIONAL @ constant pressure

  38. At a constant temperature, if volume is halved, what happens to pressure? • Pressure doubles

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