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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 287 · 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.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) powdered sugar (d) sugar in icy water
  2. 2.True or false: sugar in warm water dissolves faster. (a) True (b) False
  3. 3.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
  4. 4.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
  5. 5.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar stirred well (c) sugar in warm water (d) powdered sugar
  6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) time to dissolve (c) the stirring (d) the water temperature
  7. 7.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  8. 8.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a comb (c) a balloon (d) warm water
  9. 9.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cotton wool (c) honey (d) a clock or timer
  10. 10.🥄 Which of these does not dissolve in water? (a) sugar (b) sand (c) glucose powder (d) food colour
  11. 11.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  12. 12.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) cold water is wet (d) warm water is thicker
  13. 13.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
  14. 14.True or false: sugar in icy water dissolves slower. (a) False (b) True
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the stirring (c) the amount of sugar (d) the water temperature
  16. 16.True or false: powdered sugar dissolves faster. (a) True (b) False
  17. 17.True or false: sugar in icy water dissolves faster. (a) False (b) True
  18. 18.🧺 Which of these is needed for the dissolving test? (a) sugar (b) cotton wool (c) a mirror (d) a comb
  19. 19.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) a magnet (d) a clock or timer
  20. 20.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  21. 21.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  22. 22.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  23. 23.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) two clear glasses (d) cold water
  25. 25.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  26. 26.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it sank as sand (d) it vanished for ever
  27. 27.True or false: sugar does not dissolve in water. (a) True (b) False
  28. 28.True or false: a big sugar cube dissolves slower. (a) True (b) False
  29. 29.True or false: a big sugar cube dissolves faster. (a) False (b) True
  30. 30.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
  32. 32.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  33. 33.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
  34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) a magnet (d) two clear glasses
  35. 35.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  36. 36.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) sugar (d) a clock or timer
  37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
  38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
  39. 39.True or false: glucose powder dissolves in water. (a) False (b) True
  40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) the water temperature (c) time to dissolve

Answer key

  1. powdered sugar
  2. True
  3. sugar in warm water
  4. needed
  5. a big sugar cube
  6. time to dissolve
  7. not needed
  8. warm water
  9. a clock or timer
  10. sand
  11. dissolves in water
  12. particles move faster
  13. a grown-up
  14. True
  15. the water temperature
  16. True
  17. False
  18. sugar
  19. a magnet
  20. does not dissolve
  21. does not dissolve
  22. slower
  23. does not dissolve
  24. a mirror
  25. not needed
  26. it spread in the water
  27. False
  28. True
  29. False
  30. slower
  31. we keep it the same
  32. faster
  33. look for leftover grains
  34. a magnet
  35. faster
  36. a comb
  37. True
  38. False
  39. True
  40. the stirring

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