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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 431 · 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.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
  2. 2.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it spread in the water (c) it sank as sand (d) it vanished for ever
  3. 3.🥄 Which of these does not dissolve in water? (a) table salt (b) sugar (c) small pebbles (d) food colour
  4. 4.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) a clock or timer (d) a balloon
  5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
  6. 6.🛟 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
  7. 7.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
  8. 8.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
  9. 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) the sugar cube (d) neither of them
  10. 10.True or false: baking soda does not dissolve in water. (a) True (b) False
  11. 11.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
  12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a clock or timer (d) a comb
  13. 13.True or false: warm water is needed for the dissolving test. (a) False (b) True
  14. 14.True or false: honey is not needed for the dissolving test. (a) False (b) True
  15. 15.⚖️ 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 keep it the same (c) we measure it
  16. 16.⚖️ 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) True (b) False
  17. 17.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  18. 18.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) honey (d) sugar
  19. 19.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
  20. 20.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) a mirror
  22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cotton wool (c) two clear glasses (d) warm water
  23. 23.🥄 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) baking soda (d) sand
  24. 24.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  25. 25.True or false: sawdust does not dissolve in water. (a) True (b) False
  26. 26.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) chalk powder (d) small pebbles
  27. 27.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  28. 28.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  29. 29.🥄 Which of these dissolves in water? (a) sand (b) cooking oil (c) table salt (d) sawdust
  30. 30.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a balloon (c) sugar (d) two clear glasses
  31. 31.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  32. 32.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) baking soda (d) table salt
  33. 33.🧺 Which of these is needed for the dissolving test? (a) honey (b) a mirror (c) a comb (d) cold water
  34. 34.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  35. 35.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
  36. 36.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  37. 37.True or false: a magnet is needed for the dissolving test. (a) True (b) False
  38. 38.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) the same (d) slower
  39. 39.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar in warm water
  40. 40.⚖️ 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) True (b) False

Answer key

  1. True
  2. it spread in the water
  3. small pebbles
  4. a clock or timer
  5. we measure it
  6. look for leftover grains
  7. some stays undissolved
  8. False
  9. powdered sugar
  10. False
  11. it settles at the bottom
  12. a comb
  13. True
  14. True
  15. we keep it the same
  16. True
  17. faster
  18. sugar
  19. sugar left unstirred
  20. does not dissolve
  21. a mirror
  22. cotton wool
  23. baking soda
  24. faster
  25. True
  26. baking soda
  27. faster
  28. a grown-up
  29. table salt
  30. a balloon
  31. slower
  32. cooking oil
  33. cold water
  34. needed
  35. needed
  36. not needed
  37. False
  38. faster
  39. sugar in warm water
  40. True

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