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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 300 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) the sugar turns to salt (d) all of it dissolves
  2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
  3. 3.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) cold water is wet (d) warm water is thicker
  4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) powdered sugar (d) both the same
  5. 5.🥄 Which of these does not dissolve in water? (a) sand (b) food colour (c) baking soda (d) sugar
  6. 6.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) slower (d) not at all
  7. 7.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) honey (c) a clock or timer (d) two clear glasses
  8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  9. 9.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
  11. 11.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
  12. 12.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  13. 13.True or false: glucose powder does not dissolve in water. (a) True (b) False
  14. 14.🥄 Which of these dissolves in water? (a) small pebbles (b) sugar (c) sawdust (d) cooking oil
  15. 15.🥄 Which of these does not dissolve in water? (a) table salt (b) food colour (c) sawdust (d) glucose powder
  16. 16.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) look for leftover grains (d) taste it
  17. 17.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a crystal (c) a solution (d) a magnet
  18. 18.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  19. 19.True or false: sugar left unstirred dissolves faster. (a) True (b) False
  20. 20.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) two clear glasses (c) cotton wool (d) honey
  21. 21.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sugar (d) chalk powder
  22. 22.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) powdered sugar
  23. 23.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) table salt (d) cooking oil
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) a teaspoon (d) two clear glasses
  25. 25.True or false: honey is not needed for the dissolving test. (a) True (b) False
  26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a comb (c) a clock or timer (d) sugar
  27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cotton wool (c) a clock or timer (d) two clear glasses
  28. 28.⚖️ 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
  29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) honey (d) two clear glasses
  30. 30.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) baking soda (d) sand
  31. 31.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
  32. 32.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  33. 33.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  34. 34.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) sugar (c) two clear glasses (d) a magnet
  35. 35.True or false: sugar stirred well dissolves faster. (a) False (b) True
  36. 36.🔍 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
  37. 37.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  38. 38.True or false: honey is needed for the dissolving test. (a) False (b) True
  39. 39.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  40. 40.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve

Answer key

  1. some stays undissolved
  2. False
  3. particles move faster
  4. powdered sugar
  5. sand
  6. faster
  7. honey
  8. True
  9. slower
  10. True
  11. a grown-up
  12. faster
  13. False
  14. sugar
  15. sawdust
  16. look for leftover grains
  17. a solution
  18. needed
  19. False
  20. two clear glasses
  21. chalk powder
  22. powdered sugar
  23. cooking oil
  24. a magnet
  25. True
  26. a comb
  27. cotton wool
  28. we change it
  29. honey
  30. sand
  31. not needed
  32. faster
  33. slower
  34. a magnet
  35. True
  36. it settles at the bottom
  37. needed
  38. False
  39. does not dissolve
  40. dissolves in water

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