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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 557 · 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.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  2. 2.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  3. 3.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  4. 4.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
  5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the water temperature (c) the stirring (d) time to dissolve
  6. 6.🥄 Which of these dissolves in water? (a) glucose powder (b) cooking oil (c) chalk powder (d) small pebbles
  7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) two clear glasses (c) cold water (d) a teaspoon
  8. 8.🥄 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sand (d) table salt
  9. 9.True or false: a comb is not needed for the dissolving test. (a) False (b) True
  10. 10.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) sugar (d) honey
  12. 12.🔍 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
  13. 13.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  14. 14.🥄 Which of these does not dissolve in water? (a) sugar (b) food colour (c) sand (d) glucose powder
  15. 15.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  16. 16.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) cooking oil (d) sand
  17. 17.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) time to dissolve (c) the amount of water (d) the water temperature
  19. 19.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
  20. 20.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) a big sugar cube (d) sugar stirred well
  21. 21.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it spread in the water (d) it became air
  22. 22.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) powdered sugar (d) sugar left unstirred
  23. 23.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  24. 24.⚖️ 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
  25. 25.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) table salt
  26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) a balloon (d) sugar
  27. 27.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
  28. 28.True or false: cooking oil does not dissolve in water. (a) False (b) True
  29. 29.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
  30. 30.True or false: chalk powder does not dissolve in water. (a) False (b) True
  31. 31.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
  32. 32.True or false: a comb is needed for the dissolving test. (a) True (b) False
  33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) True (b) False
  34. 34.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) a mirror (c) a balloon (d) cotton wool
  35. 35.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
  36. 36.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  37. 37.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  38. 38.⚖️ 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 change it (c) we keep it the same
  39. 39.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) faster (d) slower
  40. 40.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed

Answer key

  1. dissolves in water
  2. True
  3. slower
  4. needed
  5. time to dissolve
  6. glucose powder
  7. a magnet
  8. table salt
  9. True
  10. slower
  11. honey
  12. let the water evaporate
  13. faster
  14. sand
  15. needed
  16. sugar
  17. not needed
  18. the water temperature
  19. True
  20. a big sugar cube
  21. it spread in the water
  22. powdered sugar
  23. does not dissolve
  24. the stirring
  25. chalk powder
  26. a balloon
  27. a grown-up
  28. True
  29. True
  30. True
  31. look for leftover grains
  32. False
  33. False
  34. two clear glasses
  35. some stays undissolved
  36. not needed
  37. needed
  38. we change it
  39. faster
  40. not needed

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