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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 631 · 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 a clock or timer for the dissolving test? (a) needed (b) not needed
  2. 2.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  3. 3.⚖️ 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
  4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
  5. 5.True or false: a big sugar cube dissolves slower. (a) False (b) True
  6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a teaspoon (d) a magnet
  7. 7.🔍 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
  8. 8.🧺 Which of these is not needed for the dissolving test? (a) honey (b) warm water (c) sugar (d) two clear glasses
  9. 9.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  10. 10.⚖️ 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
  11. 11.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) small pebbles (d) sawdust
  12. 12.True or false: a comb is needed for the dissolving test. (a) True (b) False
  13. 13.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a magnet (d) a crystal
  14. 14.🔮 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
  15. 15.🥄 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) glucose powder (d) food colour
  16. 16.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  17. 17.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.True or false: cooking oil does not dissolve in water. (a) True (b) False
  19. 19.True or false: sugar does not dissolve in water. (a) False (b) True
  20. 20.True or false: food colour does not dissolve in water. (a) True (b) False
  21. 21.True or false: sand does not dissolve in water. (a) False (b) True
  22. 22.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  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 water is kept the same. (a) True (b) False
  25. 25.True or false: glucose powder dissolves in water. (a) True (b) False
  26. 26.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
  27. 27.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) taste it (d) look for leftover grains
  28. 28.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sawdust (d) chalk powder
  29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a teaspoon (d) a comb
  30. 30.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) sugar in icy water
  31. 31.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) a mirror (d) a teaspoon
  32. 32.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) stir it more (c) keep it in a fridge (d) add more water
  33. 33.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar stirred well (d) sugar in warm water
  34. 34.True or false: sawdust does not dissolve in water. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) table salt (d) sugar
  36. 36.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
  37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
  38. 38.⚖️ 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 water temperature (c) the amount of water
  39. 39.True or false: warm water is needed for the dissolving test. (a) True (b) False
  40. 40.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster

Answer key

  1. needed
  2. needed
  3. we keep it the same
  4. True
  5. True
  6. a magnet
  7. it spread in the water
  8. honey
  9. not needed
  10. we measure it
  11. table salt
  12. False
  13. a solution
  14. powdered sugar
  15. chalk powder
  16. dissolves in water
  17. does not dissolve
  18. True
  19. False
  20. False
  21. True
  22. slower
  23. False
  24. True
  25. True
  26. it settles at the bottom
  27. look for leftover grains
  28. glucose powder
  29. a comb
  30. sugar in icy water
  31. a teaspoon
  32. let the water evaporate
  33. sugar left unstirred
  34. True
  35. sawdust
  36. some stays undissolved
  37. True
  38. the amount of water
  39. True
  40. faster

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