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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 83 · 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 is the odd one out? (a) food colour (b) baking soda (c) chalk powder (d) glucose powder
  2. 2.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) food colour (d) table salt
  3. 3.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  4. 4.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sugar (d) baking soda
  5. 5.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  6. 6.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
  7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the kind of sugar (c) time to dissolve
  8. 8.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) both the same (d) powdered sugar
  9. 9.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
  10. 10.⚖️ 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
  11. 11.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  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 keep it the same (b) we measure it (c) we change it
  13. 13.True or false: a big sugar cube dissolves faster. (a) True (b) False
  14. 14.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
  15. 15.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  16. 16.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) small pebbles (d) table salt
  17. 17.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the water turns solid (d) the sugar turns to salt
  18. 18.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) poke it with a finger (d) smell it closely
  19. 19.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  20. 20.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  21. 21.True or false: sugar does not dissolve in water. (a) True (b) False
  22. 22.True or false: chalk powder dissolves in water. (a) False (b) True
  23. 23.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  24. 24.True or false: powdered sugar dissolves slower. (a) False (b) True
  25. 25.True or false: powdered sugar dissolves faster. (a) True (b) False
  26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
  27. 27.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
  28. 28.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) warm water (d) a balloon
  29. 29.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it vanished for ever (d) it became air
  30. 30.True or false: a comb is not needed for the dissolving test. (a) True (b) False
  31. 31.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) cooking oil
  33. 33.True or false: a mirror is needed for the dissolving test. (a) False (b) True
  34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cotton wool (c) warm water (d) two clear glasses
  35. 35.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
  37. 37.⚖️ 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) the water temperature (c) the amount of water (d) the amount of sugar
  38. 38.True or false: warm water is needed for the dissolving test. (a) False (b) True
  39. 39.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) cold water is wet (c) warm water is thicker (d) sugar likes the dark
  40. 40.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) let the water evaporate (d) add more water

Answer key

  1. chalk powder
  2. sawdust
  3. dissolves in water
  4. sand
  5. not needed
  6. powdered sugar
  7. the kind of sugar
  8. powdered sugar
  9. faster
  10. True
  11. True
  12. we keep it the same
  13. False
  14. True
  15. a grown-up
  16. table salt
  17. some stays undissolved
  18. look for leftover grains
  19. does not dissolve
  20. slower
  21. False
  22. False
  23. does not dissolve
  24. False
  25. True
  26. False
  27. sugar stirred well
  28. a balloon
  29. it spread in the water
  30. True
  31. True
  32. table salt
  33. False
  34. cotton wool
  35. does not dissolve
  36. not needed
  37. the water temperature
  38. True
  39. particles move faster
  40. let the water evaporate

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