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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 926 · 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 mirror is not needed for the dissolving test. (a) False (b) True
  2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) cold water (d) a clock or timer
  3. 3.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
  4. 4.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) sugar (d) honey
  5. 5.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it dissolves (d) it settles at the bottom
  6. 6.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in warm water (d) sugar in icy water
  7. 7.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) keep it in a fridge (d) let the water evaporate
  8. 8.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
  9. 9.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  10. 10.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  11. 11.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
  12. 12.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
  13. 13.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) food colour (d) sand
  14. 14.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  15. 15.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the kind of sugar (c) the water temperature
  17. 17.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
  18. 18.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  19. 19.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a mirror (d) warm water
  20. 20.True or false: sugar stirred well dissolves faster. (a) False (b) True
  21. 21.True or false: sugar left unstirred dissolves slower. (a) True (b) False
  22. 22.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  23. 23.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
  24. 24.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) not at all (d) slower
  25. 25.True or false: sugar left unstirred dissolves faster. (a) True (b) False
  26. 26.True or false: cold water is needed for the dissolving test. (a) True (b) False
  27. 27.True or false: sugar in icy water dissolves slower. (a) False (b) True
  28. 28.True or false: food colour does not dissolve in water. (a) False (b) True
  29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
  30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) sugar (c) cold water (d) warm water
  31. 31.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  32. 32.🔍 Which is the odd one out? (a) sugar (b) food colour (c) table salt (d) chalk powder
  33. 33.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a crystal (d) a magnet
  34. 34.True or false: sugar stirred well dissolves slower. (a) False (b) True
  35. 35.True or false: food colour dissolves in water. (a) False (b) True
  36. 36.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in icy water (c) powdered sugar (d) sugar in warm water
  38. 38.🔍 Which is the odd one out? (a) sawdust (b) sand (c) small pebbles (d) table salt
  39. 39.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it sank as sand (d) it spread in the water
  40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) time to dissolve

Answer key

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

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