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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 277 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) some stays undissolved (d) all of it dissolves
  2. 2.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  3. 3.🥄 Which of these does not dissolve in water? (a) sand (b) table salt (c) baking soda (d) sugar
  4. 4.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  5. 5.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
  6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
  7. 7.True or false: chalk powder does not dissolve in water. (a) True (b) False
  8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) a teaspoon (d) a clock or timer
  9. 9.⚖️ 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 measure it (c) we keep it the same
  10. 10.True or false: sand does not dissolve in water. (a) False (b) True
  11. 11.True or false: powdered sugar dissolves slower. (a) True (b) False
  12. 12.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
  13. 13.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
  14. 14.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  15. 15.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) a teaspoon (c) cold water (d) two clear glasses
  16. 16.True or false: sugar stirred well dissolves faster. (a) False (b) True
  17. 17.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) a big sugar cube (d) sugar in warm water
  18. 18.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a comb (c) sugar (d) warm water
  20. 20.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
  21. 21.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  22. 22.True or false: warm water is not needed for the dissolving test. (a) False (b) True
  23. 23.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
  24. 24.True or false: baking soda dissolves in water. (a) False (b) True
  25. 25.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  26. 26.⚖️ 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 kind of sugar (c) the stirring (d) time to dissolve
  27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) sugar (d) cotton wool
  28. 28.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it vanished for ever (d) it became air
  29. 29.⚖️ 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
  30. 30.True or false: sugar in icy water dissolves faster. (a) True (b) False
  31. 31.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  32. 32.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  33. 33.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  34. 34.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the amount of water (d) time to dissolve
  36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
  37. 37.⚖️ 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
  38. 38.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  39. 39.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  40. 40.True or false: sugar does not dissolve in water. (a) True (b) False

Answer key

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

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