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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 394 · 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 does not dissolve in water? (a) table salt (b) chalk powder (c) food colour (d) baking soda
  2. 2.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in warm water (c) a big sugar cube (d) sugar in icy water
  3. 3.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) the same (d) slower
  4. 4.⚖️ 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
  5. 5.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) stir it more (d) add more water
  6. 6.True or false: powdered sugar dissolves faster. (a) False (b) True
  7. 7.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  8. 8.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  9. 9.🥄 Which of these dissolves in water? (a) sawdust (b) sugar (c) sand (d) chalk powder
  10. 10.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  11. 11.True or false: sawdust does not dissolve in water. (a) True (b) False
  12. 12.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a comb (c) a magnet (d) a balloon
  13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) sawdust (b) sand (c) food colour (d) small pebbles
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
  16. 16.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  17. 17.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  18. 18.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
  20. 20.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  21. 21.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it settles at the bottom (c) it turns blue (d) it dissolves
  22. 22.True or false: sugar in warm water dissolves slower. (a) True (b) False
  23. 23.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) a big sugar cube (d) sugar left unstirred
  24. 24.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sawdust (d) food colour
  25. 25.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it sank as sand (d) it vanished for ever
  26. 26.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cotton wool (c) a teaspoon (d) two clear glasses
  28. 28.True or false: honey is not needed for the dissolving test. (a) False (b) True
  29. 29.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
  30. 30.True or false: sugar in icy water dissolves slower. (a) False (b) True
  31. 31.⚖️ 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 water temperature (c) the amount of sugar (d) the kind of sugar
  32. 32.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
  33. 33.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) a comb (d) two clear glasses
  34. 34.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  35. 35.True or false: a big sugar cube dissolves slower. (a) True (b) False
  36. 36.True or false: sugar stirred well dissolves faster. (a) True (b) False
  37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) a balloon
  38. 38.True or false: baking soda dissolves in water. (a) True (b) False
  39. 39.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
  40. 40.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a rainbow (c) a crystal (d) a solution

Answer key

  1. chalk powder
  2. sugar in warm water
  3. faster
  4. we keep it the same
  5. let the water evaporate
  6. True
  7. slower
  8. needed
  9. sugar
  10. faster
  11. True
  12. a teaspoon
  13. False
  14. food colour
  15. we keep it the same
  16. not needed
  17. slower
  18. False
  19. we keep it the same
  20. does not dissolve
  21. it settles at the bottom
  22. False
  23. sugar stirred well
  24. sawdust
  25. it spread in the water
  26. needed
  27. cotton wool
  28. True
  29. look for leftover grains
  30. True
  31. the water temperature
  32. False
  33. two clear glasses
  34. dissolves in water
  35. True
  36. True
  37. a balloon
  38. True
  39. a grown-up
  40. a solution

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