particle model

• What does the particle model state about matter?

  Everything is made up of tiny particles
• How does the particle model describe the behavior of particles in different states of matter?

  It explains movement and forces between particles
• What are the three states of matter according to the particle model?

  • Solid (e.g., ice)
  • Liquid (e.g., water)
  • Gas (e.g., water vapour)
• How do the particles in solids behave?

  They vibrate about fixed positions
• What holds the particles together in solids?

  Strong forces of attraction
• Why is the density of solids generally highest?

  Particles are closest together
• How do the forces of attraction in liquids compare to those in solids?

  They are weaker in liquids
• How do particles in liquids move compared to solids?

  They can move past each other
• How does the energy of particles in liquids compare to solids and gases?

  More energy than solids, less than gases
• How do particles in gases behave?

  They move freely and travel randomly
• What is the relationship between kinetic energy and particle movement?

  Higher kinetic energy means faster movement
• What is the density of gases compared to solids and liquids?

  Gases have low densities
• Describe the behavior of particles in solids, liquids, and gases.

  • Solids: Fixed positions, vibrate, strong attraction
  • Liquids: Close together, move past each other, weaker attraction
  • Gases: Free movement, random directions, almost no attraction