States of matter

• What are the three states of matter?

  Solid, liquid, gas
• What are the processes associated with the state changes of matter?

  • Solid to liquid: melting
  • Solid to gas: sublimation
  • Liquid to gas: evaporation/boiling
  • Liquid to solid: solidification/freezing
  • Gas to liquid: condensing
• How are particles arranged in a solid?

  Particles are in a regular arrangement (lattice) and vibrate about fixed positions
• Can solids be compressed?

  No, solids cannot be compressed
• How are particles arranged in a liquid?

  Particles have no regular arrangement and are able to move past each other
• Can liquids be compressed?

  No, liquids cannot be compressed
• How are particles arranged in a gas?

  Particles are far apart, move randomly at fast speeds (high energy)
• Can gases be compressed?

  Yes, gases can be compressed
• What is the difference in particle movement between solids, liquids, and gases?

  Solids vibrate in fixed positions, liquids move past each other, and gases move randomly at high speeds
• If a substance changes from solid to gas, what process is occurring?

  Sublimation
• What happens to a liquid when it freezes?

  It solidifies
• What is the process called when a gas turns into a liquid?

  Condensing
• what is needed to overcome the electrostatic forces of attraction 


  Energy (heat) is needed to overcome the electrostatic forces of attraction between particles to melt/evaporate
• Physical change:no new substance made


  Beep