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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
• ### Transcript

• 1. How do you classify these?
• Ice
• Water
• Steam
• 2. 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.
• 3. 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?
• 4. 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
• 5. 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
• 6. 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.
• 7. 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?
• 8. Choose one item. Describe the material, without mentioning its name, so that your friend can guess what the material is.
• 9. 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.
• 10. Solid, liquid or gas?
• 11. Solid, liquid or gas?
• 12. 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.