Y7 Particles 02 3 states of matter
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Y7 Particles 02 3 states of matter

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  • TEACHER’S NOTES - answers not revealed here - space to fill in answers - complete by adding tick/cross on whiteboard - students copy and complete own version of table

Y7 Particles 02 3 states of matter Y7 Particles 02 3 states of matter Presentation Transcript

  • How do you classify these?
    • Ice
          • Water
            • Steam
  • The 3 states of matter
    • Learning Objectives :
    • to classify materials as either solids, liquids or gases.
    • to explain the physical properties of solids, liquids and gases.
  • 7G Solids, liquids and gases - In a state! fixed volume fixed shape gas liquid solid Fill in the table with the answers to these testing questions: Does it have a fixed shape? Does it have a fixed volume?
  • 7G Solids, liquids and gases - In a state! Now answer some more testing questions about a solid, a liquid and a gas. liquid Is it heavy for its size? Can it stretch? Can it spread out? Does it conduct heat well? Is it easy to squash? gas solid
  • Solid, Liquid or Gas? stone Plasticine cold custard toothpaste sand tomato sauce foam rubber pencil steam paper metal honey jam hot custard sugar jelly rubber concrete water air
  • Solid or Liquid?
    • Some substances have properties which make it difficult for us to decide whether they are really solids or liquids. Sand is a good example.
  • Solid or Liquid?
    • If you look at individual grains of sand, you can see that they have definite shapes. Each grain is very hard, and keeps its shape. You can make wet sand into a sand castle.
    • But if you have a bucket full of dry sand, you can pour it. The ability to flow is a property of liquids but not solids, so sand appears to have the properties of both.
    • 1 Write down all the reasons why you might think sand is a solid.
    • 2 Why might we also think that sand is a liquid?
  • Choose one item. Describe the material, without mentioning its name, so that your friend can guess what the material is.
  • Describing
    • 4 Is the material a solid or a liquid?
    • a Write down all the reasons for thinking it is a solid.
    • b Write down all the reasons for thinking it is a liquid.
    • c Can it change? For instance, is custard always runny? How can you make it change?
    • 5 Now answer questions 3 and 4 again for one of the other materials.
  • Solid, liquid or gas?
  • Solid, liquid or gas?
  • The 3 states of matter
    • Learning Objectives :
    • to classify materials as either solids, liquids or gases.
    • to explain the physical properties of solids, liquids and gases.