particle model

• What allows liquids to flow?

  Weak forces of attraction between particles
• What happens when a liquid is heated?

  Particles gain energy and move faster
• What are the three states of matter?

  Solid, liquid, and gas
• What does particle theory explain?

  How particles behave in different states
• What happens to solid particles when heated?

  They gain energy and vibrate more
• What is the melting point?

  The temperature where solids melt
• What occurs at the melting point?

  Particles break free from their bonds
• How are particles arranged in liquids?

  Randomly, but fairly compact