States Of Matter

• What is the state of matter where particles vibrate on the spot and do not move?

  Solid
• How do particles behave in a liquid state of matter?

  Particles have slight movement but are still touching each other
• In which state of matter do particles move freely and do not touch?

  Gas
• What are the characteristics of the three states of matter?

  • **Solid**:
  • Particles vibrate in fixed positions
  • Particles always touching
  • Lowest kinetic energy per particle
  • **Liquid**:
  • Particles move to fill the area
  • Some particles touching, some not
  • Middle kinetic energy per particle
  • **Gas**:
  • Particles move freely and bounce off surfaces
  • Particles do not touch and are far apart
  • Highest kinetic energy per particle
• What state of matter has particles that are very close together but can move past each other?

  Liquid
• What happens to the arrangement of particles during a change of state?

  The position, energy, and arrangement of the particles change depending on the state they change to
• What is the term for the temperature at which a solid turns into a liquid?

  Melting Point
• What is the term for the temperature at which a liquid turns into a gas?

  Boiling Point
• What are the limitations of the particle model?

  • Doesn't show differences in the size of particles
  • Doesn't show the forces or interactions between particles
  • Doesn't show that most of an atom is empty space
• How does the kinetic energy of particles differ among the three states of matter?

  Solids have the lowest kinetic energy, liquids have middle kinetic energy, and gases have the highest kinetic energy
• In which state of matter do particles have the highest level of energy and move very fast in all directions?

  Gas
• What is the behavior of particles in a solid state of matter?

  Particles move in fixed positions and are always touching
• What is the arrangement of particles in a gas state of matter?

  Particles are far apart and do not touch