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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 166 · 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 of these is not needed for the dissolving test? (a) sugar (b) warm water (c) two clear glasses (d) a comb
  2. 2.True or false: a mirror is needed for the dissolving test. (a) True (b) False
  3. 3.True or false: a big sugar cube dissolves faster. (a) True (b) False
  4. 4.True or false: cold water is needed for the dissolving test. (a) True (b) False
  5. 5.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  6. 6.True or false: chalk powder does not dissolve in water. (a) False (b) True
  7. 7.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
  9. 9.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  10. 10.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  11. 11.True or false: sugar in warm water dissolves faster. (a) True (b) False
  12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
  13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) a balloon (d) a teaspoon
  14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
  15. 15.⚖️ 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
  16. 16.True or false: cold water is not needed for the dissolving test. (a) False (b) True
  17. 17.🔮 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) some stays undissolved (c) the water turns solid (d) all of it dissolves
  18. 18.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  19. 19.True or false: baking soda does not dissolve in water. (a) False (b) True
  20. 20.🔍 Which is the odd one out? (a) sawdust (b) sand (c) chalk powder (d) sugar
  21. 21.True or false: sugar in warm water dissolves slower. (a) True (b) False
  22. 22.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) sugar (c) a magnet (d) two clear glasses
  23. 23.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) warm water (c) sugar (d) a mirror
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) a clock or timer (d) a teaspoon
  25. 25.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) warm water (c) a balloon (d) two clear glasses
  26. 26.🥄 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) table salt (d) glucose powder
  27. 27.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it spread in the water (d) it sank as sand
  28. 28.🥄 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) sugar (d) glucose powder
  29. 29.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
  30. 30.True or false: sawdust does not dissolve in water. (a) True (b) False
  31. 31.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a mirror (d) a clock or timer
  32. 32.🔮 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
  33. 33.🛟 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
  34. 34.🥄 Which of these dissolves in water? (a) table salt (b) chalk powder (c) small pebbles (d) sawdust
  35. 35.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a teaspoon (c) a mirror (d) cotton wool
  36. 36.🥄 Which of these dissolves slower? (a) sugar in warm water (b) a big sugar cube (c) powdered sugar (d) sugar stirred well
  37. 37.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
  38. 38.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.True or false: honey is needed for the dissolving test. (a) False (b) True
  40. 40.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed

Answer key

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

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