Transition & Solid, Liquid, Gas

• Solids have high melting points because the particles are held together by strong forces, so more energy is needed to break these bonds.
• Particles in solids are arranged in regular patterns called lattices or crystal structures.
• The atoms/molecules vibrate around fixed positions (lattice sites) but do not move from their position.
• characteristics of solids

  Strong bonds

  Held in fixed regular lattice

  Vibrate in fixed position when heated
• Liquid particles are close together with weak attractive forces between them. The particles can slide past one another easily as they are free to move about randomly.
• characteristics of liquids

  move around each other

  compact and flow

  flow to fit container
• characteristics of gasses

  weak to no attraction

  move in straight lines randomly

  when heated they expand container or increase pressure
• what is the process of solid to liquid

  melting
• what is process of liquid to gas

  evaporation
• process of solid to gas

  sublimation
• process of gas to solid

  deposition
• During a change of state graph , why does sometimes the line stays constant?

  Because all the energy is used to change the state of the particles, not increasing the temperature