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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 938 · 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: cooking oil does not dissolve in water. (a) True (b) False
  2. 2.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
  3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
  4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) honey (c) warm water (d) a teaspoon
  5. 5.⚖️ 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 keep it the same (c) we change it
  6. 6.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in warm water (c) sugar in icy water (d) sugar left unstirred
  7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
  8. 8.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) slower (d) faster
  9. 9.True or false: small pebbles dissolves in water. (a) True (b) False
  10. 10.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
  11. 11.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  12. 12.True or false: table salt does not dissolve in water. (a) True (b) False
  13. 13.True or false: sugar stirred well dissolves faster. (a) True (b) False
  14. 14.⚖️ 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 change it (c) we keep it the same
  15. 15.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the water turns solid (d) the sugar turns to salt
  16. 16.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
  17. 17.True or false: sugar is not needed for the dissolving test. (a) True (b) False
  18. 18.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  19. 19.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) warm water (c) cotton wool (d) a magnet
  20. 20.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) cooking oil (d) food colour
  21. 21.True or false: sugar left unstirred dissolves faster. (a) False (b) True
  22. 22.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  23. 23.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a balloon (c) honey (d) sugar
  24. 24.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  25. 25.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
  26. 26.True or false: a big sugar cube dissolves slower. (a) True (b) False
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
  28. 28.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it settles at the bottom (c) it dissolves (d) it turns blue
  29. 29.⚖️ 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) False (b) True
  30. 30.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  31. 31.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) two clear glasses (c) a comb (d) honey
  32. 32.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  33. 33.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
  34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a mirror (c) sugar (d) cold water
  35. 35.🔍 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
  36. 36.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
  37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) sugar left unstirred
  38. 38.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.True or false: sugar in warm water dissolves slower. (a) False (b) True
  40. 40.True or false: a balloon is not needed for the dissolving test. (a) False (b) True

Answer key

  1. True
  2. True
  3. we change it
  4. honey
  5. we measure it
  6. sugar in warm water
  7. False
  8. faster
  9. False
  10. a solution
  11. dissolves in water
  12. False
  13. True
  14. we keep it the same
  15. some stays undissolved
  16. True
  17. False
  18. does not dissolve
  19. warm water
  20. food colour
  21. False
  22. needed
  23. sugar
  24. True
  25. needed
  26. True
  27. False
  28. it settles at the bottom
  29. True
  30. slower
  31. two clear glasses
  32. slower
  33. particles move faster
  34. a mirror
  35. let the water evaporate
  36. powdered sugar
  37. sugar left unstirred
  38. dissolves in water
  39. False
  40. True

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