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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 110 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) cotton wool (d) a clock or timer
  2. 2.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.⚖️ 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
  4. 4.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it dissolves (d) it settles at the bottom
  5. 5.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
  6. 6.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
  8. 8.🥄 Which of these dissolves slower? (a) sugar in warm water (b) a big sugar cube (c) powdered sugar (d) sugar stirred well
  9. 9.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  10. 10.🔍 Which is the odd one out? (a) sugar (b) food colour (c) small pebbles (d) baking soda
  11. 11.True or false: sugar in icy water dissolves slower. (a) True (b) False
  12. 12.🥄 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) sand (d) small pebbles
  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 of these does not dissolve in water? (a) sawdust (b) table salt (c) sugar (d) food colour
  15. 15.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  16. 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) faster (d) not at all
  17. 17.True or false: sugar in icy water dissolves faster. (a) False (b) True
  18. 18.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
  19. 19.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  20. 20.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  21. 21.⚖️ 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
  22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
  23. 23.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) food colour
  24. 24.True or false: baking soda dissolves in water. (a) True (b) False
  25. 25.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  26. 26.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) sugar (c) cold water (d) cotton wool
  27. 27.🥄 Which of these dissolves in water? (a) sawdust (b) sand (c) glucose powder (d) chalk powder
  28. 28.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
  29. 29.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  30. 30.⚖️ 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
  31. 31.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
  32. 32.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a clock or timer (c) a mirror (d) a balloon
  33. 33.True or false: a big sugar cube dissolves faster. (a) True (b) False
  34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
  35. 35.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
  36. 36.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
  37. 37.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a comb (d) two clear glasses
  38. 38.True or false: baking soda does not dissolve in water. (a) False (b) True
  39. 39.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  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. cotton wool
  2. does not dissolve
  3. we change it
  4. it settles at the bottom
  5. look for leftover grains
  6. does not dissolve
  7. a grown-up
  8. a big sugar cube
  9. does not dissolve
  10. small pebbles
  11. True
  12. baking soda
  13. we keep it the same
  14. sawdust
  15. faster
  16. faster
  17. False
  18. not needed
  19. slower
  20. needed
  21. True
  22. False
  23. food colour
  24. True
  25. dissolves in water
  26. cotton wool
  27. glucose powder
  28. True
  29. not needed
  30. False
  31. True
  32. a clock or timer
  33. False
  34. True
  35. powdered sugar
  36. a solution
  37. two clear glasses
  38. False
  39. slower
  40. True

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