What makes a material a solid, liquid or gas

1
What makes a material a solid, liquid or gas?
2
1. Lets think back!

• What do you already know about particles?
• How do you think the particles are arranged in
  solids, liquids and gases?
• How does what you have observed about the
  appearance and behaviour of solids, liquids and
  gases link to what you know about particles?
• Can you do three group drawings to show how you
  think the particles are arranged in a solid, a
  liquid and a gas?

3

• 2. Falling marbles

• What did you notice? Does this fit in with your
  ideas about materials?
• What evidence does this give you to support your
  ideas about particles?
• What do you think is happening to the particles
  of the material as the marbles fall through it?
• How do you think this is this different in
  solids, liquids and gases?

4
3. Plenary virtual particles
particles

• How did the simulation help you
  explain the differences between
  solids, liquids and gases?
• How can looking at the arrangement and behaviour
  of particles help you identify a solid, liquid or
  gas?
• Do these ideas fit in with what you think about
  how materials behave?
• What evidence supports your ideas? Are there any
  counter-arguments to what you think?