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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 280 · 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) chalk powder (b) food colour (c) glucose powder (d) sugar
  2. 2.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  3. 3.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  4. 4.🧺 Which of these is needed for the dissolving test? (a) warm water (b) cotton wool (c) a mirror (d) a balloon
  5. 5.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
  6. 6.True or false: sugar in warm water dissolves slower. (a) False (b) True
  7. 7.🥄 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sawdust (d) sand
  8. 8.True or false: sugar is not needed for the dissolving test. (a) False (b) True
  9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) a balloon (d) a clock or timer
  10. 10.🛟 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
  11. 11.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  12. 12.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  13. 13.⚖️ 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 measure it (c) we change it
  14. 14.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) glucose powder (d) small pebbles
  15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) honey (d) a clock or timer
  16. 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
  17. 17.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  18. 18.True or false: table salt dissolves in water. (a) True (b) False
  19. 19.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  20. 20.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  21. 21.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
  22. 22.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  23. 23.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar left unstirred (c) powdered sugar (d) sugar stirred well
  24. 24.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
  25. 25.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) keep it in a fridge (d) let the water evaporate
  26. 26.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) glucose powder
  27. 27.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  28. 28.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) small pebbles (d) sand
  29. 29.True or false: cooking oil does not dissolve in water. (a) True (b) False
  30. 30.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) powdered sugar (d) sugar in icy water
  31. 31.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) cold water (c) a teaspoon (d) a clock or timer
  33. 33.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) sugar likes the dark (d) particles move faster
  34. 34.True or false: sugar stirred well dissolves faster. (a) True (b) False
  35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  37. 37.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a comb (c) cold water (d) a clock or timer
  38. 38.True or false: cold water is needed for the dissolving test. (a) True (b) False
  39. 39.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a magnet (c) two clear glasses (d) honey
  40. 40.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred

Answer key

  1. chalk powder
  2. not needed
  3. not needed
  4. warm water
  5. it spread in the water
  6. False
  7. glucose powder
  8. False
  9. a balloon
  10. a grown-up
  11. True
  12. needed
  13. we keep it the same
  14. small pebbles
  15. honey
  16. faster
  17. slower
  18. True
  19. not needed
  20. dissolves in water
  21. True
  22. faster
  23. sugar left unstirred
  24. look for leftover grains
  25. let the water evaporate
  26. cooking oil
  27. needed
  28. table salt
  29. True
  30. powdered sugar
  31. does not dissolve
  32. a comb
  33. particles move faster
  34. True
  35. we keep it the same
  36. not needed
  37. a comb
  38. True
  39. two clear glasses
  40. sugar in warm water

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