States of matter

• Describe the arrangement of the particles in each state.

  Solid = fixed, regular, in rows, touching.

  Liquid = irregular, touching.

  Gas = spread out.
• Three states of matter

  Solid, Liquid, Gas
• Describe the motion of the particles in each state

  Solid = vibrating about a fixed position.

  Liquid = flowing.

  Gas =random, fast movement.
• Kinetic theory says that all particles above absolute zero are

  moving in some way.
• In solids, because particles are bonded to their neighbours

  they can only vibrate.
• What is the difference in the particle model between solids

  and liquids?

  In liquids the particles can flow over one

  another, in a solid they cannot.
• What happen to the mass when a substance changes state?

  mass stays the same
• What happens to the particles as a liquid becomes a solid?

  Particles lose kinetic energy and the forces between

  particles bond them together in a regular arrangement
• How do you change a solid into a liquid?

  Heat it up, give the particles more energy
• Name the changes of state.

  Melting, boiling, condensing, freezing, sublimation