KS3 Particles

• What are the three states of matter observed in objects?

  Solid, liquid, and gas
• How are particles arranged in liquids?

  Close together but can move over each other
• What is the arrangement of particles in gases?

  Far apart and move randomly
• Do gases have a definite shape?

  No, they take the shape of their container
• What happens to solids when placed in a container?

  They maintain their shape
• How do liquids behave when poured into a container?

  They take the shape of the container
• What is the process of changing from solid to liquid called?

  Melting
• What is the process of changing from liquid to gas called?

  Boiling
• What happens when a gas is cooled down?

  It can change to a liquid by condensing
• What is the process of changing from liquid to solid called?

  Freezing
• What is sublimation?

  Changing directly from solid to gas
• What are the changes of state that can occur with temperature changes?

  • Solid to liquid: Melting
  • Liquid to gas: Boiling
  • Gas to liquid: Condensing
  • Liquid to solid: Freezing
  • Solid to gas: Sublimation
• How do the arrangements of particles differ in solids, liquids, and gases?

  • Solids: Fixed positions, regular arrangement, strong forces
  • Liquids: Close together, irregular arrangement, weak forces
  • Gases: Far apart, random movement, very weak forces
• What are the characteristics of solids, liquids, and gases regarding shape?

  • Solids: Definite shape
  • Liquids: No definite shape, take container shape
  • Gases: No definite shape, take container shape