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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 100 · 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 is the odd one out? (a) sugar (b) chalk powder (c) glucose powder (d) baking soda
  2. 2.🥄 Which of these dissolves in water? (a) sugar (b) sand (c) small pebbles (d) cooking oil
  3. 3.🔮 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 sugar turns to salt (c) some stays undissolved (d) the water turns solid
  4. 4.🛟 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
  5. 5.True or false: sugar in icy water dissolves slower. (a) True (b) False
  6. 6.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) sugar left unstirred
  7. 7.True or false: small pebbles dissolves in water. (a) False (b) True
  8. 8.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it became air (d) it vanished for ever
  9. 9.True or false: honey is needed for the dissolving test. (a) False (b) True
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
  11. 11.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) powdered sugar (c) sugar in icy water (d) a big sugar cube
  12. 12.True or false: warm water is not needed for the dissolving test. (a) False (b) True
  13. 13.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  14. 14.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) particles move faster (d) sugar likes the dark
  15. 15.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) faster (d) not at all
  16. 16.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  17. 17.True or false: baking soda does not dissolve in water. (a) True (b) False
  18. 18.True or false: chalk powder dissolves in water. (a) False (b) True
  19. 19.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  20. 20.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) small pebbles (d) food colour
  21. 21.True or false: sawdust does not dissolve in water. (a) False (b) True
  22. 22.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) poke it with a finger (d) taste it
  23. 23.True or false: sugar in icy water dissolves faster. (a) False (b) True
  24. 24.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) a big sugar cube
  25. 25.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cold water (c) honey (d) cotton wool
  26. 26.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
  28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) sugar (d) cotton wool
  29. 29.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) add more water (d) keep it in a fridge
  30. 30.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  31. 31.🥄 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) baking soda (d) table salt
  32. 32.True or false: a comb is not needed for the dissolving test. (a) True (b) False
  33. 33.True or false: sugar dissolves in water. (a) True (b) False
  34. 34.⚖️ 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
  35. 35.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  36. 36.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
  37. 37.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) warm water (d) a comb
  38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
  39. 39.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  40. 40.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower

Answer key

  1. chalk powder
  2. sugar
  3. some stays undissolved
  4. a grown-up
  5. True
  6. sugar left unstirred
  7. False
  8. it spread in the water
  9. False
  10. True
  11. powdered sugar
  12. False
  13. slower
  14. particles move faster
  15. faster
  16. True
  17. False
  18. False
  19. faster
  20. small pebbles
  21. True
  22. look for leftover grains
  23. False
  24. a big sugar cube
  25. cold water
  26. powdered sugar
  27. True
  28. cotton wool
  29. let the water evaporate
  30. does not dissolve
  31. chalk powder
  32. True
  33. True
  34. we measure it
  35. needed
  36. True
  37. warm water
  38. False
  39. does not dissolve
  40. faster

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