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Unit 5D: Changing State

Unit 5D: Changing State. Unit 5D: Changing State. Changing State. Unit 5D: Changing State. Some useful words Evaporation Condensation Boiling temperature State Change of state. when a liquid changes to a vapour (gas). when a vapour changes to a liquid.

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Unit 5D: Changing State

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  1. Unit 5D: Changing State Unit 5D: Changing State

  2. Unit 5D: Changing State Changing State Unit 5D: Changing State

  3. Unit 5D: Changing State Some useful words Evaporation Condensation Boiling temperature State Change of state when a liquid changes to a vapour (gas) when a vapour changes to a liquid the temperature at which a liquid boils, for water it is 100 C the 3 states are solid, liquid and gas when a substance changes from one state to another Unit 5D: Changing State: Vocabulary

  4. Unit 5D: Evaporation Evaporation Unit 5D: Evaporation: L.O. 1, 2: N.C.

  5. Unit 5D: Other Liquids Other liquids Unit 5D: Other liquids: L.O. 3: N.C.

  6. Unit 5D: How quick does a puddle dry up? How quick does a puddle dry up? Which puddle do you think will dry up the quickest? Why do you think this? What factors do you think affect how quickly a puddle dries up? Choose one of these to investigate Wind Surface area of puddle Temperature Volume of water Unit 5D: How quick does a puddle dry up? L.O. 4, 5, 6, 7, 8: N.C.

  7. Unit 5D: How quick does a puddle dry up? …cont Make a prediction. What do you think you will find? What apparatus will you need? Explain how you will carry out your experiment? What will you measure? How will you record your results? How will you keep the test fair? Unit 5D: How quick does a puddle dry up? L.O. 4, 5, 6, 7, 8: N.C.

  8. Unit 5D: How quick does a puddle dry up? Support slide The bowls represent puddles with different surface areas Which of the bowls of water do you think will dry up the quickest? Why do you think this? To make sure the test is fair, each ‘puddle’ must have the same volume of water in it and they need to be kept in a room at the same temperature. The time it takes for each ‘puddle’ to evaporate needs to be recorded. We will check the ‘puddles’ every day to see which evaporates the quickest Unit 5D: How quick does a puddle dry up? L.O. 4, 5, 6, 7, 8: N.C.

  9. Unit 5D: Drying Drying How do these appliances help things dry more quickly? Unit 5D: Drying: L.O. 9: N.C.

  10. Unit 5D: Condensation Condensation Where else do we see condensation? Unit 5D: Condensation: L.O. 10, 11, 12: N.C.

  11. Unit 5D: More Condensation More Condensation Unit 5D: More Condensation: L.O. 13, 14: N.C.

  12. Unit 5D: Boiling Water Boiling Water Unit 5D: Boiling Water: L.O. 15: N.C.

  13. Unit 5D: Melting Ice Melting Ice Take the temperature of the ice and water every 5 minutes for 2 – 3 hours. Record the results. Unit 5D: Melting Ice: L.O. 18, 19: N.C.

  14. Unit 5D: Melting Ice …cont What temperature did you end up at? What do you think would have happened if the room was 10 degrees hotter? Unit 5D: Melting Ice: L.O. 18, 19: N.C.

  15. Unit 5D: Change of State Change of State Unit 5D: Change of State: L.O. 20: N.C.

  16. Unit 5D: The Water Cycle The Water Cycle Unit 5D: The Water Cycle: L.O. 21, 22, 23, 24: N.C.

  17. Gas > Liquid Liquid > Gas Reverse of evaporation Not just water Condenses on a cold surface Condensation Temperature Air contains water Evaporation Bedroom window Depends on Cold pop can Volume of water Changing state Melting Reversible Wind Freezing Evaporating Surface area Water cycle Water evaporates from lakes Boiling Condenses as clouds Liquids evaporate quicker Falls as rain Water boils at 100ºC Collects in rivers Process starts again Unit 5D: Summary Unit 5D: Changing State: Summary

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