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Temperatures of water changing state

3rd grade (Year 4 in England) · 16 questions · Common Core: NGSS.2-PS1-4, NGSS.5-PS1-3 · England: KS2 Y4 States of matter

Name

Date

Score/ 16

  1. Question 1

    Pure water is at 60 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C60
    • A. solid
    • B. liquid
    • C. gas

  2. Question 2

    While water is boiling, what happens to its temperature?

    • A. It stays at 100 °C until all the water has boiled
    • B. It keeps rising
    • C. It jumps to 200 °C
    • D. It falls

  3. Question 3

    Water in a cup is at 23 °C. By how many degrees must it cool to reach its freezing point?

    Answer°C

  4. Question 4

    Pure water is at −2 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C0
    • A. solid
    • B. liquid
    • C. gas

  5. Question 5

    While water is boiling, what happens to its temperature?

    • A. It jumps to 200 °C
    • B. It falls
    • C. It keeps rising
    • D. It stays at 100 °C until all the water has boiled

  6. Question 6

    Water in a pan starts at 17 °C. By how many degrees must it warm up to reach its boiling point?

    Answer°C

  7. Question 7

    Pure water is at 22 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C20
    • A. solid
    • B. liquid
    • C. gas

  8. Question 8

    Why do people put salt on icy roads in winter?

    • A. Salt is heavier than ice
    • B. Salt water freezes at a lower temperature than pure water
    • C. Salt makes the road hotter
    • D. Salt soaks up the water

  9. Question 9

    Water in a cup is at 25 °C. By how many degrees must it cool to reach its freezing point?

    Answer°C

  10. Question 10

    Pure water is at −10 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C−10
    • A. solid
    • B. liquid
    • C. gas

  11. Question 11

    While water is boiling, what happens to its temperature?

    • A. It falls
    • B. It stays at 100 °C until all the water has boiled
    • C. It keeps rising
    • D. It jumps to 200 °C

  12. Question 12

    Water in a cup is at 18 °C. By how many degrees must it cool to reach its freezing point?

    Answer°C

  13. Question 13

    Pure water is at 37 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C40
    • A. solid
    • B. liquid
    • C. gas

  14. Question 14

    At what temperature does pure water boil at sea level?

    • A. 0 °C
    • B. 212 °C
    • C. 50 °C
    • D. 100 °C

  15. Question 15

    Water in a cup is at 16 °C. By how many degrees must it cool to reach its freezing point?

    Answer°C

  16. Question 16

    Pure water is at −18 °C (at normal air pressure). Is it a solid, a liquid or a gas?

    −20204060801200 °C100 °C−20
    • A. solid
    • B. liquid
    • C. gas

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Answer key: Temperatures of water changing state

  1. 1. B. liquid

  2. 2. A. It stays at 100 °C until all the water has boiled

  3. 3. 23 °C

  4. 4. A. solid

  5. 5. D. It stays at 100 °C until all the water has boiled

  6. 6. 83 °C

  7. 7. B. liquid

  8. 8. B. Salt water freezes at a lower temperature than pure water

  9. 9. 25 °C

  10. 10. A. solid

  11. 11. B. It stays at 100 °C until all the water has boiled

  12. 12. 18 °C

  13. 13. B. liquid

  14. 14. D. 100 °C

  15. 15. 16 °C

  16. 16. A. solid