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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 532 · 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.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
  2. 2.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) food colour (d) sand
  3. 3.True or false: sugar stirred well dissolves faster. (a) True (b) False
  4. 4.🔮 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
  5. 5.True or false: food colour does not dissolve in water. (a) False (b) True
  6. 6.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  7. 7.True or false: sand does not dissolve in water. (a) False (b) True
  8. 8.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) faster (d) the same
  9. 9.⚖️ 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
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
  11. 11.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  12. 12.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  13. 13.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar in warm water (d) sugar left unstirred
  14. 14.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  15. 15.True or false: warm water is needed for the dissolving test. (a) False (b) True
  16. 16.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
  17. 17.🥄 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) table salt (d) chalk powder
  18. 18.True or false: sugar stirred well dissolves slower. (a) False (b) True
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
  20. 20.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  21. 21.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
  22. 22.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
  23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  24. 24.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
  25. 25.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) baking soda (d) sand
  26. 26.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
  27. 27.True or false: table salt dissolves in water. (a) False (b) True
  28. 28.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  29. 29.True or false: warm water is not needed for the dissolving test. (a) False (b) True
  30. 30.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  31. 31.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  32. 32.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
  33. 33.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the amount of sugar (c) the stirring (d) time to dissolve
  35. 35.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) cold water (d) cotton wool
  36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
  37. 37.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  38. 38.True or false: cooking oil dissolves in water. (a) False (b) True
  39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a teaspoon (d) a comb
  40. 40.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) a big sugar cube

Answer key

  1. it spread in the water
  2. food colour
  3. True
  4. some stays undissolved
  5. False
  6. not needed
  7. True
  8. faster
  9. False
  10. we keep it the same
  11. needed
  12. True
  13. sugar in warm water
  14. needed
  15. True
  16. it settles at the bottom
  17. table salt
  18. False
  19. True
  20. needed
  21. powdered sugar
  22. a grown-up
  23. we keep it the same
  24. powdered sugar
  25. baking soda
  26. needed
  27. True
  28. faster
  29. False
  30. dissolves in water
  31. does not dissolve
  32. True
  33. faster
  34. time to dissolve
  35. cold water
  36. False
  37. slower
  38. False
  39. a comb
  40. a big sugar cube

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