Sci KPT

• What is the KPT theory?

  1 All matter is made up of tiny discrete particles

  2 The particles are in constant random motion
• Arrangements for solid 


  Very closely packed in an orderly manner
• What is the movement of particles for solids

  Vibrate about fix position
• Attractive forces between particles

  Very strong
• Kinetic energy of solid

  Very low
• Arrangement of particles for liquid

  Closely packed in disorderly manner
• Movement of particles for liquids

  Slide past each other freely throughout the liquid
• Attractive forces between particles for liquid

  Strong
• Kinetic energy for liquids

  Low
• Arrangements of particles for gases

  Very far apart in disorderly manner
• Movement of particles for gas

  Move quickly and randomly inan disorderly manner
• Attractive forces between particles for gases

  Very weak
• Kinetic energy of gas

  High
• Is there definite shape for solid?

  Yes
• Does solid have a fixed volume?

  Yes
• Can solids be compress?

  No
• Is there definite shape for liquid?

  No
• Is there a fixed volume for liquid

  Yes
• Can liquids be compress?

  No
• Is there definite shape for gases

  No
• Is there a fixed volume for gases

  No
• Can it be compress for gas?


  Ya
• What is the processes between solid and liquid

  Melting
• What is the process of liquid and gas

  Boiling
• What is the process between gas to liquid

  Condensation
• Liquid to solid what process?

  Freezing
• Solid to gas process

  Sublimation
• Gas to solid process

  Vapour decomposition
• Diff between evaporation and boiling

  1 evaporation occurs at any temperature while boiling occurs at only boiling point

  2 evaporation occurs on the surface of the liquid while boiling occurs throughout the liquid
• Similarities between evaporation and boiling 


  They involve a change in state from liquid to gas
• How to overcome the forces of attraction

  During a process, the temperature of the substance remains constant as thermal energy is absorbed from the surroundings to overcome the attractive forces between particles.
• What is diffusion

  Diffusion is the net movement from a region of higher concentration to a region of lower concentration.
• Heavier the gas higher or lower diffusion rate 


  Lower
• Lighter the gas higher or lower diffusion rate 


  Higher
• How to measure Mr or Ar

  Take the bottom number of the letter