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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 701 · 40 questions
TalentJR

What you do (Warm, stir, small): 1. An adult pours the same amount of warm water and cold water into two glasses. 2. Add one level teaspoon of sugar to each at the same time. 3. Stir each the same number of times and time how long the sugar takes to vanish. 4. Look, do not taste — then compare the two times.

NameDateTime takenScore ___ / 40
  1. 1.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  2. 2.True or false: powdered sugar dissolves faster. (a) False (b) True
  3. 3.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
  4. 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) faster (d) slower
  5. 5.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) chalk powder (d) food colour
  6. 6.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
  8. 8.True or false: sugar in warm water dissolves faster. (a) True (b) False
  9. 9.True or false: a big sugar cube dissolves slower. (a) True (b) False
  10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
  11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the stirring (c) the kind of sugar (d) the water temperature
  12. 12.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
  14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of sugar (c) time to dissolve
  15. 15.True or false: a big sugar cube dissolves faster. (a) True (b) False
  16. 16.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a balloon (c) a mirror (d) sugar
  17. 17.True or false: small pebbles dissolves in water. (a) True (b) False
  18. 18.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  19. 19.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) powdered sugar (c) sugar in icy water (d) a big sugar cube
  20. 20.True or false: sand does not dissolve in water. (a) False (b) True
  21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
  22. 22.True or false: cooking oil does not dissolve in water. (a) True (b) False
  23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) two clear glasses (d) sugar
  24. 24.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
  26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) cold water (d) cotton wool
  27. 27.True or false: sand dissolves in water. (a) True (b) False
  28. 28.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar left unstirred (d) sugar in icy water
  29. 29.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a comb (c) cold water (d) sugar
  30. 30.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
  31. 31.🔍 Which is the odd one out? (a) sugar (b) sand (c) baking soda (d) table salt
  32. 32.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sugar (d) sand
  33. 33.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  34. 34.True or false: sugar in icy water dissolves faster. (a) True (b) False
  35. 35.True or false: sugar left unstirred dissolves faster. (a) False (b) True
  36. 36.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) a clock or timer (d) cotton wool
  37. 37.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) warm water is thicker (c) cold water is wet (d) sugar likes the dark
  38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
  39. 39.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) stir it more (d) keep it in a fridge
  40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False

Answer key

  1. does not dissolve
  2. True
  3. not needed
  4. faster
  5. chalk powder
  6. dissolves in water
  7. a grown-up
  8. True
  9. True
  10. some stays undissolved
  11. the water temperature
  12. faster
  13. we keep it the same
  14. the amount of sugar
  15. False
  16. sugar
  17. False
  18. dissolves in water
  19. powdered sugar
  20. True
  21. we keep it the same
  22. True
  23. a balloon
  24. slower
  25. False
  26. cotton wool
  27. False
  28. sugar stirred well
  29. a comb
  30. True
  31. sand
  32. sugar
  33. faster
  34. False
  35. False
  36. cotton wool
  37. particles move faster
  38. we measure it
  39. let the water evaporate
  40. False

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