physical characteristics of gases the kinetic molecular theory of matter
TRANSCRIPT
Objectives• List the physical properties of gases
• Use the KMT to explain the physical properties of gases.
Kinetic Molecular Theory of Gases
• KMT- The particles of matter are in constant motion.
Ideal Gas – a gas that behaves according to the kinetic molecular theory.
Kinetic Molecular Theory of Gases1. Gases are made up of
tiny particles.- Usually atoms or
molecules
Kinetic Molecular Theory of Gases2. The particles of a gas are
far apart from each other.
• The volume of gas particles is insignificant relative to the space between the particles
Kinetic Molecular Theory of Gases3. The particles of a gas
are in constant motion and collide with each other and the walls of their container.
• The collisions are elastic; no K.E. is lost.
• Collisions exert a force -pressure
• Specian's Phun machines: Ideal gas – YouTube
Kinetic Molecular Theory of Gases5. Temperature is a
measure of the average kinetic energy of the particles of a gas.
Kinetic Energy in a Gas - YouTube
2
2
1.. mVEK
Properties of Gases
Expansion of gases
• No definite shape or volume
• Expand to fill their container
Properties of GasesDiffusion and Effusion
Diffusion –mixing of particles due to random motion of particles
Effusion – process in which gases past through a tiny opening