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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 72 · 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: sawdust dissolves in water. (a) True (b) False
  2. 2.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) taste it (d) look for leftover grains
  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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the kind of sugar (c) the water temperature (d) time to dissolve
  5. 5.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) time to dissolve (c) the water temperature
  7. 7.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) baking soda (d) chalk powder
  8. 8.⚖️ 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
  9. 9.🥄 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) food colour (d) glucose powder
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
  11. 11.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
  12. 12.⚖️ 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 keep it the same (c) we measure it
  13. 13.True or false: honey is not needed for the dissolving test. (a) False (b) True
  14. 14.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) two clear glasses (d) a mirror
  15. 15.True or false: sand does not dissolve in water. (a) True (b) False
  16. 16.🔮 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
  17. 17.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
  19. 19.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) two clear glasses (c) a comb (d) a balloon
  20. 20.True or false: sugar stirred well dissolves slower. (a) True (b) False
  21. 21.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  22. 22.True or false: sugar in warm water dissolves faster. (a) True (b) False
  23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a mirror (c) cold water (d) warm water
  25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a comb (c) two clear glasses (d) a teaspoon
  26. 26.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  27. 27.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a magnet (d) a crystal
  28. 28.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  29. 29.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  30. 30.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a comb (c) a magnet (d) honey
  31. 31.True or false: table salt does not dissolve in water. (a) True (b) False
  32. 32.True or false: sugar left unstirred dissolves faster. (a) True (b) False
  33. 33.🥄 Which of these dissolves in water? (a) cooking oil (b) sand (c) sugar (d) chalk powder
  34. 34.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) chalk powder (d) glucose powder
  35. 35.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  36. 36.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) a teaspoon (d) honey
  37. 37.⚖️ 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
  38. 38.True or false: a comb is needed for the dissolving test. (a) True (b) False
  39. 39.True or false: sugar in icy water dissolves slower. (a) True (b) False
  40. 40.🔍 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

Answer key

  1. False
  2. look for leftover grains
  3. True
  4. the water temperature
  5. not needed
  6. the stirring
  7. baking soda
  8. True
  9. chalk powder
  10. False
  11. faster
  12. we keep it the same
  13. True
  14. a mirror
  15. True
  16. powdered sugar
  17. does not dissolve
  18. it spread in the water
  19. two clear glasses
  20. False
  21. slower
  22. True
  23. True
  24. a mirror
  25. a comb
  26. not needed
  27. a solution
  28. dissolves in water
  29. faster
  30. sugar
  31. False
  32. False
  33. sugar
  34. glucose powder
  35. needed
  36. a teaspoon
  37. we change it
  38. False
  39. True
  40. let the water evaporate

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