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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 342 · 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.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a magnet (c) cold water (d) sugar
  2. 2.🔮 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
  3. 3.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
  4. 4.True or false: sugar in icy water dissolves slower. (a) True (b) False
  5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
  6. 6.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) add more water (d) let the water evaporate
  7. 7.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  8. 8.True or false: a big sugar cube dissolves slower. (a) True (b) False
  9. 9.True or false: food colour dissolves in water. (a) True (b) False
  10. 10.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) a balloon (d) cold water
  11. 11.True or false: sugar is not needed for the dissolving test. (a) True (b) False
  12. 12.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
  13. 13.True or false: a balloon is needed for the dissolving test. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sawdust (d) glucose powder
  15. 15.⚖️ 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
  16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a magnet (d) a teaspoon
  17. 17.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  18. 18.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) sugar in warm water
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the water temperature (c) the stirring (d) the amount of sugar
  20. 20.🥄 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) small pebbles
  21. 21.🥄 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) chalk powder (d) small pebbles
  22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sawdust (d) sugar
  23. 23.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  24. 24.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cotton wool (c) a clock or timer (d) sugar
  25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) sugar (c) a clock or timer (d) cold water
  26. 26.🧺 Which of these is needed for the dissolving test? (a) a comb (b) sugar (c) a magnet (d) a balloon
  27. 27.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it spread in the water (d) it sank as sand
  28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
  29. 29.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
  30. 30.True or false: powdered sugar dissolves slower. (a) True (b) False
  31. 31.🥄 Which of these dissolves in water? (a) small pebbles (b) sugar (c) cooking oil (d) sawdust
  32. 32.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a magnet (c) cotton wool (d) a balloon
  33. 33.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a clock or timer (d) a balloon
  34. 34.True or false: sand does not dissolve in water. (a) True (b) False
  35. 35.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  36. 36.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  37. 37.True or false: cold water is not needed for the dissolving test. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) small pebbles (d) food colour
  39. 39.True or false: cooking oil dissolves in water. (a) False (b) True
  40. 40.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well

Answer key

  1. a magnet
  2. powdered sugar
  3. a big sugar cube
  4. True
  5. False
  6. let the water evaporate
  7. not needed
  8. True
  9. True
  10. cold water
  11. False
  12. look for leftover grains
  13. False
  14. glucose powder
  15. we change it
  16. a magnet
  17. not needed
  18. sugar in warm water
  19. time to dissolve
  20. small pebbles
  21. baking soda
  22. sugar
  23. does not dissolve
  24. cotton wool
  25. a mirror
  26. sugar
  27. it spread in the water
  28. we keep it the same
  29. a grown-up
  30. False
  31. sugar
  32. warm water
  33. a balloon
  34. True
  35. needed
  36. faster
  37. False
  38. food colour
  39. False
  40. sugar stirred well

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