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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 666 · 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: a balloon is needed for the dissolving test. (a) False (b) True
  2. 2.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  3. 3.⚖️ 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
  4. 4.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
  5. 5.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  6. 6.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  7. 7.🥄 Which of these does not dissolve in water? (a) table salt (b) food colour (c) glucose powder (d) sand
  8. 8.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) cold water (c) a clock or timer (d) sugar
  10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) two clear glasses (d) honey
  11. 11.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) a comb (d) a teaspoon
  12. 12.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  13. 13.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it became air (d) it vanished for ever
  14. 14.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) stir it more (d) let the water evaporate
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
  16. 16.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) small pebbles (d) food colour
  17. 17.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  18. 18.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  19. 19.⚖️ 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
  20. 20.🔍 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
  21. 21.True or false: sugar left unstirred dissolves faster. (a) False (b) True
  22. 22.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a clock or timer (c) cold water (d) a comb
  23. 23.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a balloon (c) a magnet (d) warm water
  24. 24.⚖️ 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 measure it (c) we keep it the same
  25. 25.🛟 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
  26. 26.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
  28. 28.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  29. 29.True or false: a big sugar cube dissolves faster. (a) True (b) False
  30. 30.True or false: sugar in icy water dissolves slower. (a) False (b) True
  31. 31.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
  32. 32.True or false: table salt dissolves in water. (a) True (b) False
  33. 33.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
  34. 34.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
  35. 35.🔍 Which is the odd one out? (a) sugar (b) table salt (c) small pebbles (d) food colour
  36. 36.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
  37. 37.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) two clear glasses (c) a clock or timer (d) sugar
  39. 39.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  40. 40.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) warm water is thicker (d) cold water is wet

Answer key

  1. False
  2. faster
  3. True
  4. some stays undissolved
  5. dissolves in water
  6. not needed
  7. sand
  8. True
  9. a mirror
  10. honey
  11. a teaspoon
  12. slower
  13. it spread in the water
  14. let the water evaporate
  15. False
  16. food colour
  17. needed
  18. faster
  19. False
  20. it settles at the bottom
  21. False
  22. a comb
  23. warm water
  24. we keep it the same
  25. look for leftover grains
  26. needed
  27. True
  28. faster
  29. False
  30. True
  31. powdered sugar
  32. True
  33. True
  34. a grown-up
  35. small pebbles
  36. False
  37. does not dissolve
  38. a magnet
  39. needed
  40. particles move faster

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