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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 530 · 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) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
  2. 2.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar in icy water (d) sugar left unstirred
  3. 3.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  4. 4.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
  5. 5.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  6. 6.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
  7. 7.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
  8. 8.🔍 Which is the odd one out? (a) sawdust (b) sand (c) small pebbles (d) glucose powder
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) a comb (d) a teaspoon
  10. 10.True or false: powdered sugar dissolves slower. (a) False (b) True
  11. 11.⚖️ 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 keep it the same (c) we change it
  12. 12.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
  13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it
  14. 14.🥄 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) baking soda (d) cooking oil
  15. 15.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) food colour (d) chalk powder
  16. 16.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
  17. 17.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar in icy water (d) powdered sugar
  18. 18.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) sand (d) cooking oil
  19. 19.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
  20. 20.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) the same (d) faster
  21. 21.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) sugar (d) baking soda
  22. 22.True or false: baking soda does not dissolve in water. (a) False (b) True
  23. 23.🔍 Which is the odd one out? (a) sand (b) food colour (c) glucose powder (d) table salt
  24. 24.True or false: a big sugar cube dissolves faster. (a) False (b) True
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  26. 26.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) cold water is wet (d) sugar likes the dark
  27. 27.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  28. 28.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
  29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the kind of sugar (c) the amount of water (d) time to dissolve
  30. 30.True or false: a comb is needed for the dissolving test. (a) True (b) False
  31. 31.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) a teaspoon (d) sugar
  32. 32.🔍 Which is the odd one out? (a) sugar (b) food colour (c) sawdust (d) glucose powder
  33. 33.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar left unstirred (d) powdered sugar
  34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
  35. 35.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) cold water (d) a magnet
  36. 36.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  37. 37.True or false: glucose powder dissolves in water. (a) False (b) True
  38. 38.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  39. 39.True or false: table salt dissolves in water. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) cooking oil

Answer key

  1. some stays undissolved
  2. sugar stirred well
  3. faster
  4. look for leftover grains
  5. slower
  6. sugar in warm water
  7. a grown-up
  8. glucose powder
  9. a comb
  10. False
  11. we keep it the same
  12. True
  13. we keep it the same
  14. cooking oil
  15. food colour
  16. False
  17. sugar in icy water
  18. sugar
  19. powdered sugar
  20. faster
  21. chalk powder
  22. False
  23. sand
  24. False
  25. True
  26. particles move faster
  27. slower
  28. powdered sugar
  29. time to dissolve
  30. False
  31. cotton wool
  32. sawdust
  33. sugar left unstirred
  34. True
  35. a magnet
  36. needed
  37. True
  38. does not dissolve
  39. True
  40. table salt

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