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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 207 · 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.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
  2. 2.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
  3. 3.🥄 Which of these dissolves in water? (a) sugar (b) cooking oil (c) sawdust (d) sand
  4. 4.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) glucose powder (d) small pebbles
  5. 5.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) smell it closely (d) taste it
  6. 6.🥄 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) glucose powder (d) baking soda
  7. 7.⚖️ 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) the amount of water (c) the stirring (d) the water temperature
  8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) time to dissolve (c) the kind of sugar (d) the water temperature
  9. 9.True or false: table salt does not dissolve in water. (a) False (b) True
  10. 10.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  11. 11.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a clock or timer (c) honey (d) warm water
  12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
  13. 13.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  14. 14.True or false: sugar stirred well dissolves slower. (a) True (b) False
  15. 15.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  16. 16.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  17. 17.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) slower (d) not at all
  18. 18.⚖️ 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
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the stirring (c) time to dissolve
  20. 20.True or false: sugar dissolves in water. (a) False (b) True
  21. 21.True or false: sugar is not needed for the dissolving test. (a) True (b) False
  22. 22.True or false: sugar in warm water dissolves slower. (a) False (b) True
  23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of water
  25. 25.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) food colour (d) baking soda
  26. 26.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  27. 27.True or false: sugar stirred well dissolves faster. (a) True (b) False
  28. 28.True or false: powdered sugar dissolves slower. (a) True (b) False
  29. 29.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) warm water (d) a clock or timer
  30. 30.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sawdust (d) table salt
  31. 31.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) stir it more (d) let the water evaporate
  32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) a mirror (d) a clock or timer
  33. 33.True or false: sand does not dissolve in water. (a) False (b) True
  34. 34.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) sugar (c) cold water (d) a teaspoon
  35. 35.True or false: chalk powder does not dissolve in water. (a) False (b) True
  36. 36.True or false: sugar does not dissolve in water. (a) False (b) True
  37. 37.🔮 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
  38. 38.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a magnet (d) two clear glasses
  39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
  40. 40.🥄 Which of these dissolves in water? (a) sand (b) sawdust (c) cooking oil (d) glucose powder

Answer key

  1. not needed
  2. needed
  3. sugar
  4. small pebbles
  5. look for leftover grains
  6. cooking oil
  7. the water temperature
  8. time to dissolve
  9. False
  10. slower
  11. honey
  12. we measure it
  13. faster
  14. False
  15. faster
  16. needed
  17. faster
  18. True
  19. the stirring
  20. True
  21. False
  22. False
  23. we keep it the same
  24. the amount of water
  25. sawdust
  26. not needed
  27. True
  28. False
  29. a comb
  30. table salt
  31. let the water evaporate
  32. a mirror
  33. True
  34. a mirror
  35. True
  36. False
  37. some stays undissolved
  38. two clear glasses
  39. False
  40. glucose powder

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