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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 512 · 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.

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  1. 1.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) sugar (d) cotton wool
  2. 2.True or false: sugar stirred well dissolves slower. (a) False (b) True
  3. 3.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  4. 4.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  5. 5.True or false: sand dissolves in water. (a) True (b) False
  6. 6.🔍 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
  7. 7.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) glucose powder (d) chalk powder
  8. 8.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a magnet (c) warm water (d) a clock or timer
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  11. 11.True or false: cooking oil does not dissolve in water. (a) True (b) False
  12. 12.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) faster (d) not at all
  13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
  14. 14.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a balloon (c) honey (d) cotton wool
  15. 15.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a comb (c) honey (d) a teaspoon
  16. 16.🔍 Which is the odd one out? (a) table salt (b) sugar (c) sand (d) baking soda
  17. 17.True or false: powdered sugar dissolves slower. (a) True (b) False
  18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sawdust (d) sand
  20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
  21. 21.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it turns blue (c) it floats up (d) it dissolves
  22. 22.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  23. 23.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) baking soda (d) table salt
  24. 24.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) two clear glasses (d) a teaspoon
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
  26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  27. 27.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) cotton wool (d) cold water
  28. 28.True or false: cold water is not needed for the dissolving test. (a) True (b) False
  29. 29.🛟 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
  30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
  31. 31.True or false: honey is not needed for the dissolving test. (a) True (b) False
  32. 32.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) two clear glasses (d) a balloon
  33. 33.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  34. 34.⚖️ 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 water temperature (c) the stirring
  35. 35.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  36. 36.🔍 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
  37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) sugar (c) two clear glasses (d) cold water
  38. 38.True or false: sugar in warm water dissolves slower. (a) True (b) False
  39. 39.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  40. 40.True or false: sugar stirred well dissolves faster. (a) False (b) True

Answer key

  1. sugar
  2. False
  3. needed
  4. a grown-up
  5. False
  6. it spread in the water
  7. chalk powder
  8. needed
  9. a magnet
  10. we keep it the same
  11. True
  12. faster
  13. we change it
  14. warm water
  15. a teaspoon
  16. sand
  17. False
  18. True
  19. glucose powder
  20. True
  21. it settles at the bottom
  22. slower
  23. sawdust
  24. a comb
  25. we keep it the same
  26. faster
  27. cold water
  28. False
  29. look for leftover grains
  30. False
  31. True
  32. two clear glasses
  33. not needed
  34. the stirring
  35. slower
  36. let the water evaporate
  37. a mirror
  38. False
  39. slower
  40. True

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