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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 308 · 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.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
  2. 2.True or false: food colour does not dissolve in water. (a) True (b) False
  3. 3.True or false: baking soda dissolves in water. (a) False (b) True
  4. 4.True or false: glucose powder does not dissolve in water. (a) True (b) False
  5. 5.True or false: a big sugar cube dissolves faster. (a) True (b) False
  6. 6.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sawdust (d) sugar
  7. 7.🔍 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
  8. 8.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
  9. 9.⚖️ 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
  10. 10.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  11. 11.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  12. 12.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  13. 13.True or false: cooking oil dissolves in water. (a) True (b) False
  14. 14.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  15. 15.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
  16. 16.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a clock or timer (d) honey
  18. 18.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
  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 keep it the same (b) we measure it (c) we change it
  20. 20.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) food colour (d) glucose powder
  21. 21.🔍 Which is the odd one out? (a) table salt (b) sugar (c) glucose powder (d) sand
  22. 22.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) taste it (d) look for leftover grains
  23. 23.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
  24. 24.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  25. 25.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  26. 26.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar left unstirred (d) powdered sugar
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) time to dissolve (c) the amount of water (d) the water temperature
  28. 28.True or false: a mirror is needed for the dissolving test. (a) True (b) False
  29. 29.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a clock or timer (d) a balloon
  30. 30.⚖️ 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 stirring (c) the water temperature
  31. 31.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a solution (c) a rainbow (d) a crystal
  32. 32.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a mirror (d) two clear glasses
  33. 33.True or false: baking soda does not dissolve in water. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) table salt (d) chalk powder
  35. 35.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) cooking oil (d) food colour
  36. 36.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) a big sugar cube (d) powdered sugar
  37. 37.⚖️ 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 keep it the same (c) we measure it
  38. 38.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  39. 39.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  40. 40.🥄 Which of these dissolves in water? (a) sugar (b) chalk powder (c) small pebbles (d) sand

Answer key

  1. let the water evaporate
  2. False
  3. True
  4. False
  5. False
  6. sawdust
  7. it spread in the water
  8. not needed
  9. True
  10. slower
  11. False
  12. needed
  13. False
  14. needed
  15. not needed
  16. needed
  17. honey
  18. needed
  19. we keep it the same
  20. cooking oil
  21. sand
  22. look for leftover grains
  23. particles move faster
  24. does not dissolve
  25. faster
  26. sugar left unstirred
  27. the water temperature
  28. False
  29. a balloon
  30. the stirring
  31. a solution
  32. a mirror
  33. False
  34. chalk powder
  35. cooking oil
  36. a big sugar cube
  37. we change it
  38. dissolves in water
  39. faster
  40. sugar

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