States of matter

• Solids & Liquids

  • In solids and liquids, the molecules are tightly packed together
  • The difference is, in a liquid, the molecules have enough energy to push past each other
  • As a result of this, the density of solids and liquids are roughly the same
• STATES OF MATTER:

  A) Solid

  B) Liquid

  
• Gases

  • In a gas, the molecules are widely separated
  • As a result of this, gases have significantly lower densities than solids or liquids
  • At room temperature, the distance between molecules in a gas is roughly ten times (in each direction) the distance between molecules in a solid or liquid
  • As a result, the density of a gas is typically around one-thousandth (1/1000) of the density of a solid or liquid, for example:
  • The density of water is 1000 kg/m3
  • The density of air at sea level and room temperature is 1.3 kg/m3
• STATES OF MATTER:

  A) Gases