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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 817 · 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.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  2. 2.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
  3. 3.True or false: glucose powder does not dissolve in water. (a) False (b) True
  4. 4.True or false: table salt does not dissolve in water. (a) False (b) True
  5. 5.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
  6. 6.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sugar (d) chalk powder
  7. 7.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) sand
  8. 8.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) small pebbles (d) baking soda
  9. 9.True or false: cooking oil dissolves in water. (a) True (b) False
  10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a balloon (c) warm water (d) cold water
  11. 11.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  12. 12.True or false: sugar left unstirred dissolves faster. (a) False (b) True
  13. 13.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of sugar (c) the amount of water (d) the water temperature
  15. 15.⚖️ 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
  16. 16.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
  18. 18.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar in icy water (c) sugar stirred well (d) powdered sugar
  19. 19.True or false: baking soda does not dissolve in water. (a) False (b) True
  20. 20.⚖️ 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
  21. 21.True or false: cold water is needed for the dissolving test. (a) False (b) True
  22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) a teaspoon (d) cold water
  23. 23.True or false: chalk powder dissolves in water. (a) True (b) False
  24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) False (b) True
  25. 25.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
  26. 26.True or false: a mirror is needed for the dissolving test. (a) True (b) False
  27. 27.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it turns blue (c) it dissolves (d) it floats up
  28. 28.True or false: a magnet is needed for the dissolving test. (a) True (b) False
  29. 29.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
  30. 30.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the water turns solid (d) the sugar turns to salt
  31. 31.True or false: a big sugar cube dissolves slower. (a) False (b) True
  32. 32.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  33. 33.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  34. 34.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) powdered sugar (d) a big sugar cube
  35. 35.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) table salt (d) cooking oil
  36. 36.🥄 Which of these dissolves in water? (a) cooking oil (b) sugar (c) sawdust (d) chalk powder
  37. 37.⚖️ 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 measure it (c) we keep it the same
  38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
  39. 39.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  40. 40.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve

Answer key

  1. needed
  2. faster
  3. False
  4. False
  5. a grown-up
  6. sugar
  7. sand
  8. baking soda
  9. False
  10. a balloon
  11. faster
  12. False
  13. not needed
  14. time to dissolve
  15. we measure it
  16. does not dissolve
  17. we keep it the same
  18. sugar in icy water
  19. False
  20. True
  21. True
  22. a magnet
  23. False
  24. False
  25. look for leftover grains
  26. False
  27. it settles at the bottom
  28. False
  29. powdered sugar
  30. some stays undissolved
  31. True
  32. needed
  33. True
  34. powdered sugar
  35. table salt
  36. sugar
  37. we keep it the same
  38. we keep it the same
  39. faster
  40. dissolves in water

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