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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 130 · 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.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a crystal (c) a solution (d) a magnet
  2. 2.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) taste it (d) smell it closely
  3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a magnet (c) a clock or timer (d) sugar
  4. 4.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
  5. 5.True or false: chalk powder does not dissolve in water. (a) False (b) True
  6. 6.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar stirred well (d) sugar in icy water
  7. 7.True or false: a magnet is needed for the dissolving test. (a) False (b) True
  8. 8.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  9. 9.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cold water (c) a comb (d) cotton wool
  10. 10.🥄 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
  11. 11.True or false: a big sugar cube dissolves faster. (a) False (b) True
  12. 12.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) sugar (d) a mirror
  13. 13.True or false: warm water is needed for the dissolving test. (a) True (b) False
  14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
  15. 15.True or false: glucose powder dissolves in water. (a) True (b) False
  16. 16.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it vanished for ever (d) it spread in the water
  17. 17.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  18. 18.True or false: sugar dissolves in water. (a) True (b) False
  19. 19.⚖️ 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
  20. 20.True or false: sugar is not needed for the dissolving test. (a) False (b) True
  21. 21.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) food colour (d) chalk powder
  22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) honey (c) two clear glasses (d) warm water
  23. 23.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
  25. 25.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
  26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
  27. 27.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) glucose powder (d) cooking oil
  28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
  29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
  30. 30.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
  31. 31.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  32. 32.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  33. 33.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
  34. 34.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) stir it more (d) let the water evaporate
  35. 35.True or false: powdered sugar dissolves slower. (a) False (b) True
  36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
  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 keep it the same (b) we change it (c) we measure it
  38. 38.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar in icy water (d) sugar in warm water
  39. 39.True or false: a big sugar cube dissolves slower. (a) False (b) True
  40. 40.🧺 Which of these is not needed for the dissolving test? (a) a comb (b) two clear glasses (c) a clock or timer (d) sugar

Answer key

  1. a solution
  2. look for leftover grains
  3. a magnet
  4. some stays undissolved
  5. True
  6. sugar stirred well
  7. False
  8. not needed
  9. cold water
  10. particles move faster
  11. False
  12. sugar
  13. True
  14. True
  15. True
  16. it spread in the water
  17. not needed
  18. True
  19. False
  20. False
  21. food colour
  22. honey
  23. dissolves in water
  24. False
  25. not needed
  26. False
  27. cooking oil
  28. True
  29. False
  30. True
  31. slower
  32. needed
  33. True
  34. let the water evaporate
  35. False
  36. we measure it
  37. we change it
  38. sugar in warm water
  39. True
  40. a comb

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