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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 406 · 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 is the odd one out? (a) chalk powder (b) food colour (c) sugar (d) glucose powder
  2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
  3. 3.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar in warm water (d) sugar in icy water
  4. 4.⚖️ 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
  5. 5.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
  6. 6.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
  7. 7.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
  8. 8.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar in icy water
  9. 9.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) chalk powder (d) sawdust
  10. 10.True or false: a big sugar cube dissolves faster. (a) True (b) False
  11. 11.True or false: sawdust does not dissolve in water. (a) False (b) True
  12. 12.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  13. 13.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) glucose powder (d) chalk powder
  14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) two clear glasses (d) a magnet
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
  16. 16.⚖️ 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 measure it (c) we keep it the same
  17. 17.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
  18. 18.True or false: baking soda does not dissolve in water. (a) False (b) True
  19. 19.True or false: sawdust dissolves in water. (a) True (b) False
  20. 20.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  21. 21.🥄 Which of these dissolves in water? (a) sand (b) food colour (c) cooking oil (d) sawdust
  22. 22.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  23. 23.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) sand (d) glucose powder
  24. 24.🥄 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) sawdust (d) baking soda
  25. 25.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) sugar (c) a clock or timer (d) honey
  26. 26.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
  27. 27.True or false: warm water is needed for the dissolving test. (a) False (b) True
  28. 28.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a rainbow (c) a crystal (d) a solution
  29. 29.True or false: table salt does not dissolve in water. (a) True (b) False
  30. 30.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  31. 31.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a comb (c) two clear glasses (d) warm water
  33. 33.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  34. 34.True or false: powdered sugar dissolves faster. (a) False (b) True
  35. 35.🥄 Which of these does not dissolve in water? (a) cooking oil (b) glucose powder (c) sugar (d) food colour
  36. 36.⚖️ 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
  37. 37.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
  38. 38.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) some stays undissolved (d) the sugar turns to salt
  39. 39.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  40. 40.⚖️ 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

Answer key

  1. chalk powder
  2. False
  3. sugar in warm water
  4. we keep it the same
  5. not needed
  6. a grown-up
  7. sugar left unstirred
  8. sugar in icy water
  9. sugar
  10. False
  11. True
  12. dissolves in water
  13. glucose powder
  14. a magnet
  15. we keep it the same
  16. we change it
  17. look for leftover grains
  18. False
  19. False
  20. True
  21. food colour
  22. slower
  23. sand
  24. baking soda
  25. honey
  26. needed
  27. True
  28. a solution
  29. False
  30. False
  31. faster
  32. a comb
  33. faster
  34. True
  35. cooking oil
  36. True
  37. let the water evaporate
  38. some stays undissolved
  39. needed
  40. True

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