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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 292 · 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 comb for the dissolving test? (a) not needed (b) needed
  2. 2.🥄 Which of these dissolves in water? (a) table salt (b) sawdust (c) sand (d) small pebbles
  3. 3.🥄 Which of these dissolves in water? (a) small pebbles (b) sugar (c) chalk powder (d) sawdust
  4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cotton wool (c) a teaspoon (d) sugar
  5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
  6. 6.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
  7. 7.True or false: powdered sugar dissolves faster. (a) True (b) False
  8. 8.🥄 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) sand (d) small pebbles
  9. 9.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  10. 10.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  11. 11.True or false: a big sugar cube dissolves slower. (a) False (b) True
  12. 12.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a clock or timer (d) cotton wool
  13. 13.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) table salt (d) glucose powder
  14. 14.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
  15. 15.⚖️ 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
  16. 16.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) cold water is wet (c) warm water is thicker (d) particles move faster
  17. 17.🧺 Which of these is not needed for the dissolving test? (a) a comb (b) a teaspoon (c) two clear glasses (d) sugar
  18. 18.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) cold water (c) sugar (d) warm water
  19. 19.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
  20. 20.🔍 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
  21. 21.True or false: table salt does not dissolve in water. (a) True (b) False
  22. 22.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  23. 23.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
  24. 24.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
  25. 25.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a mirror (c) honey (d) a clock or timer
  26. 26.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  27. 27.True or false: baking soda dissolves in water. (a) False (b) True
  28. 28.⚖️ 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
  29. 29.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  30. 30.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  31. 31.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a balloon (d) warm water
  32. 32.True or false: sawdust dissolves in water. (a) True (b) False
  33. 33.⚖️ 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) True (b) False
  34. 34.True or false: sugar in icy water dissolves faster. (a) False (b) True
  35. 35.True or false: a balloon is needed for the dissolving test. (a) False (b) True
  36. 36.⚖️ 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 measure it (c) we change it
  37. 37.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  38. 38.🥄 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) sugar
  39. 39.True or false: a comb is needed for the dissolving test. (a) True (b) False
  40. 40.🔮 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) some stays undissolved (d) the sugar turns to salt

Answer key

  1. not needed
  2. table salt
  3. sugar
  4. cotton wool
  5. False
  6. sugar left unstirred
  7. True
  8. glucose powder
  9. needed
  10. slower
  11. True
  12. cotton wool
  13. sawdust
  14. powdered sugar
  15. we keep it the same
  16. particles move faster
  17. a comb
  18. a magnet
  19. look for leftover grains
  20. let the water evaporate
  21. False
  22. not needed
  23. True
  24. it spread in the water
  25. a clock or timer
  26. True
  27. True
  28. the amount of water
  29. faster
  30. not needed
  31. warm water
  32. False
  33. False
  34. False
  35. False
  36. we change it
  37. needed
  38. small pebbles
  39. False
  40. some stays undissolved

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