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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 168 · 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.

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  1. 1.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a teaspoon (c) honey (d) a mirror
  2. 2.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) warm water is thicker (d) cold water is wet
  3. 3.True or false: a big sugar cube dissolves faster. (a) True (b) False
  4. 4.True or false: sugar in icy water dissolves faster. (a) True (b) False
  5. 5.⚖️ 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) time to dissolve (c) the kind of sugar
  6. 6.True or false: sugar stirred well dissolves slower. (a) True (b) False
  7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) a magnet (d) two clear glasses
  8. 8.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) two clear glasses (d) sugar
  9. 9.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a magnet (d) sugar
  10. 10.True or false: honey is needed for the dissolving test. (a) True (b) False
  11. 11.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) smell it closely (d) poke it with a finger
  12. 12.⚖️ 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 change it (c) we measure it
  13. 13.True or false: sugar in warm water dissolves slower. (a) True (b) False
  14. 14.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
  15. 15.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  16. 16.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  17. 17.🔍 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
  18. 18.🥄 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) food colour (d) sand
  19. 19.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a magnet (d) a crystal
  20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) sugar (d) cotton wool
  21. 21.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  22. 22.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) food colour (d) sand
  23. 23.True or false: baking soda does not dissolve in water. (a) True (b) False
  24. 24.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar in icy water (d) sugar in warm water
  25. 25.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) chalk powder (d) baking soda
  26. 26.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
  28. 28.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
  29. 29.True or false: warm water is needed for the dissolving test. (a) True (b) False
  30. 30.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) False (b) True
  32. 32.True or false: warm water is not needed for the dissolving test. (a) True (b) False
  33. 33.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
  34. 34.🧺 Which of these is needed for the dissolving test? (a) honey (b) a magnet (c) cotton wool (d) two clear glasses
  35. 35.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
  36. 36.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  37. 37.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  38. 38.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) the sugar cube (d) neither of them
  39. 39.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
  40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a mirror (c) sugar (d) a clock or timer

Answer key

  1. a teaspoon
  2. particles move faster
  3. False
  4. False
  5. the kind of sugar
  6. False
  7. a magnet
  8. a comb
  9. sugar
  10. False
  11. look for leftover grains
  12. we change it
  13. False
  14. faster
  15. True
  16. faster
  17. it spread in the water
  18. sand
  19. a solution
  20. cotton wool
  21. not needed
  22. sand
  23. False
  24. sugar in warm water
  25. chalk powder
  26. slower
  27. we measure it
  28. False
  29. True
  30. dissolves in water
  31. False
  32. False
  33. let the water evaporate
  34. two clear glasses
  35. sugar stirred well
  36. True
  37. faster
  38. powdered sugar
  39. a big sugar cube
  40. a mirror

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