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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 916 · 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) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
  2. 2.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all
  3. 3.True or false: table salt does not dissolve in water. (a) True (b) False
  4. 4.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
  5. 5.True or false: small pebbles does not dissolve in water. (a) True (b) False
  6. 6.⚖️ 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) False (b) True
  7. 7.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  8. 8.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
  9. 9.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) a teaspoon (d) a comb
  10. 10.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  11. 11.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) cold water (d) cotton wool
  12. 12.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  13. 13.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) a magnet (d) sugar
  15. 15.True or false: sawdust dissolves in water. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) honey (c) warm water (d) cold water
  17. 17.True or false: sugar dissolves in water. (a) True (b) False
  18. 18.True or false: sugar is needed for the dissolving test. (a) True (b) False
  19. 19.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  20. 20.⚖️ 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 measure it (c) we keep it the same
  21. 21.⚖️ 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
  22. 22.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  23. 23.True or false: cold water is needed for the dissolving test. (a) True (b) False
  24. 24.True or false: small pebbles dissolves in water. (a) True (b) False
  25. 25.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) cold water (d) a magnet
  26. 26.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar in icy water (d) sugar stirred well
  27. 27.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) add more water (d) stir it more
  28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the amount of water (c) the water temperature
  29. 29.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  30. 30.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  31. 31.True or false: sugar does not dissolve in water. (a) True (b) False
  32. 32.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
  33. 33.⚖️ 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
  34. 34.⚖️ 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
  35. 35.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  36. 36.True or false: powdered sugar dissolves slower. (a) True (b) False
  37. 37.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) warm water is thicker (d) sugar likes the dark
  38. 38.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) food colour (d) sand
  39. 39.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  40. 40.True or false: sugar left unstirred dissolves slower. (a) True (b) False

Answer key

  1. powdered sugar
  2. faster
  3. False
  4. look for leftover grains
  5. True
  6. True
  7. faster
  8. not needed
  9. a comb
  10. needed
  11. cotton wool
  12. dissolves in water
  13. faster
  14. a magnet
  15. False
  16. honey
  17. True
  18. True
  19. does not dissolve
  20. we keep it the same
  21. False
  22. dissolves in water
  23. True
  24. False
  25. cold water
  26. sugar in icy water
  27. let the water evaporate
  28. the amount of water
  29. dissolves in water
  30. True
  31. False
  32. a grown-up
  33. we measure it
  34. True
  35. needed
  36. False
  37. particles move faster
  38. food colour
  39. not needed
  40. True

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