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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 198 · 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.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
  2. 2.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  3. 3.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) sugar (d) a teaspoon
  4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a teaspoon (d) a balloon
  5. 5.🔍 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
  6. 6.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  7. 7.🔮 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 sugar turns to salt (c) the water turns solid (d) some stays undissolved
  8. 8.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) powdered sugar (d) sugar in icy water
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a comb (d) sugar
  10. 10.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sugar (d) sand
  11. 11.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  12. 12.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  13. 13.True or false: chalk powder dissolves in water. (a) False (b) True
  14. 14.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) slower (d) faster
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
  16. 16.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  17. 17.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a teaspoon (c) a comb (d) two clear glasses
  18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) sand (b) sawdust (c) chalk powder (d) sugar
  20. 20.True or false: sugar in warm water dissolves faster. (a) True (b) False
  21. 21.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  22. 22.⚖️ 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 keep it the same (c) we measure it
  23. 23.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) sand (d) glucose powder
  24. 24.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the water temperature (c) the amount of water (d) time to dissolve
  26. 26.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) taste it (d) smell it closely
  27. 27.True or false: a big sugar cube dissolves faster. (a) False (b) True
  28. 28.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
  29. 29.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  30. 30.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
  31. 31.True or false: powdered sugar dissolves faster. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) food colour (d) glucose powder
  33. 33.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
  34. 34.⚖️ 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
  35. 35.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
  36. 36.⚖️ 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
  37. 37.⚖️ 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) True (b) False
  38. 38.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) a big sugar cube
  39. 39.⚖️ 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
  40. 40.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster

Answer key

  1. powdered sugar
  2. faster
  3. cotton wool
  4. a balloon
  5. let the water evaporate
  6. not needed
  7. some stays undissolved
  8. powdered sugar
  9. a comb
  10. sand
  11. dissolves in water
  12. not needed
  13. False
  14. faster
  15. False
  16. faster
  17. a comb
  18. True
  19. sugar
  20. True
  21. True
  22. we keep it the same
  23. glucose powder
  24. needed
  25. time to dissolve
  26. look for leftover grains
  27. False
  28. True
  29. not needed
  30. False
  31. True
  32. chalk powder
  33. False
  34. we keep it the same
  35. needed
  36. we measure it
  37. False
  38. a big sugar cube
  39. True
  40. faster

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