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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 920 · 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.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  2. 2.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  3. 3.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  4. 4.True or false: honey is not needed for the dissolving test. (a) False (b) True
  5. 5.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar left unstirred (d) sugar in icy water
  6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
  7. 7.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) both the same (d) the sugar cube
  8. 8.True or false: cooking oil does not dissolve in water. (a) True (b) False
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) cold water (d) a magnet
  10. 10.⚖️ 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 kind of sugar (c) the amount of sugar (d) the water temperature
  11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
  12. 12.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
  13. 13.True or false: a comb is needed for the dissolving test. (a) True (b) False
  14. 14.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
  15. 15.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  16. 16.True or false: sugar in icy water dissolves faster. (a) True (b) False
  17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  18. 18.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) add more water (d) stir it more
  19. 19.⚖️ 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 keep it the same (c) we change it
  20. 20.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
  21. 21.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  22. 22.True or false: sugar in warm water dissolves slower. (a) False (b) True
  23. 23.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) warm water (d) a balloon
  24. 24.🔍 Which is the odd one out? (a) sand (b) sugar (c) baking soda (d) food colour
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) False (b) True
  26. 26.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  27. 27.True or false: glucose powder dissolves in water. (a) True (b) False
  28. 28.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) a big sugar cube
  29. 29.⚖️ 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
  30. 30.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  31. 31.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a balloon (c) a clock or timer (d) cold water
  32. 32.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
  33. 33.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  34. 34.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a crystal (d) a magnet
  35. 35.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  36. 36.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sand (d) glucose powder
  38. 38.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
  39. 39.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) two clear glasses (d) a magnet
  40. 40.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) glucose powder (d) sawdust

Answer key

  1. dissolves in water
  2. not needed
  3. faster
  4. True
  5. powdered sugar
  6. we change it
  7. powdered sugar
  8. True
  9. a magnet
  10. time to dissolve
  11. False
  12. it settles at the bottom
  13. False
  14. a grown-up
  15. needed
  16. False
  17. needed
  18. let the water evaporate
  19. we keep it the same
  20. False
  21. faster
  22. False
  23. warm water
  24. sand
  25. False
  26. not needed
  27. True
  28. a big sugar cube
  29. we keep it the same
  30. does not dissolve
  31. a balloon
  32. look for leftover grains
  33. needed
  34. a solution
  35. needed
  36. does not dissolve
  37. glucose powder
  38. faster
  39. a magnet
  40. sawdust

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