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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 693 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the stirring (c) the amount of water (d) time to dissolve
  2. 2.⚖️ 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 measure it (c) we change it
  3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
  4. 4.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  5. 5.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) sugar (d) table salt
  6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a comb (c) sugar (d) two clear glasses
  7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) sugar stirred well (d) a big sugar cube
  8. 8.True or false: a big sugar cube dissolves slower. (a) True (b) False
  9. 9.True or false: baking soda does not dissolve in water. (a) False (b) True
  10. 10.True or false: sawdust dissolves in water. (a) True (b) False
  11. 11.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
  12. 12.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
  13. 13.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it floats up (d) it settles at the bottom
  14. 14.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  15. 15.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  16. 16.🛟 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
  17. 17.True or false: food colour does not dissolve in water. (a) False (b) True
  18. 18.True or false: cold water is not needed for the dissolving test. (a) True (b) False
  19. 19.🥄 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
  20. 20.🥄 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) sugar (d) baking soda
  21. 21.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
  22. 22.True or false: a mirror is needed for the dissolving test. (a) False (b) True
  23. 23.🔍 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
  24. 24.🥄 Which of these dissolves in water? (a) glucose powder (b) sand (c) sawdust (d) small pebbles
  25. 25.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) chalk powder (d) food colour
  26. 26.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a magnet (d) a rainbow
  27. 27.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) two clear glasses (c) a comb (d) honey
  28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) slower (c) the same (d) faster
  29. 29.🧺 Which of these is not needed for the dissolving test? (a) a comb (b) two clear glasses (c) cold water (d) sugar
  30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a mirror (c) sugar (d) a teaspoon
  31. 31.🔍 Which is the odd one out? (a) table salt (b) sugar (c) baking soda (d) sand
  32. 32.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) cooking oil (d) glucose powder
  33. 33.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
  34. 34.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  35. 35.True or false: sugar stirred well dissolves slower. (a) False (b) True
  36. 36.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
  38. 38.⚖️ 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) False (b) True
  39. 39.⚖️ 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
  40. 40.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains

Answer key

  1. time to dissolve
  2. we change it
  3. we keep it the same
  4. does not dissolve
  5. small pebbles
  6. a comb
  7. sugar stirred well
  8. True
  9. False
  10. False
  11. True
  12. False
  13. it settles at the bottom
  14. slower
  15. slower
  16. a grown-up
  17. False
  18. False
  19. particles move faster
  20. chalk powder
  21. not needed
  22. False
  23. let the water evaporate
  24. glucose powder
  25. chalk powder
  26. a solution
  27. two clear glasses
  28. faster
  29. a comb
  30. a mirror
  31. sand
  32. glucose powder
  33. powdered sugar
  34. dissolves in water
  35. False
  36. does not dissolve
  37. False
  38. True
  39. False
  40. look for leftover grains

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