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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 903 · 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 dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) food colour
  2. 2.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  4. 4.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
  5. 5.🔍 Which is the odd one out? (a) food colour (b) sugar (c) table salt (d) small pebbles
  6. 6.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) food colour (d) sand
  7. 7.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  8. 8.True or false: sugar stirred well dissolves slower. (a) True (b) False
  9. 9.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the amount of sugar (c) the water temperature (d) the amount of water
  11. 11.True or false: a comb is needed for the dissolving test. (a) False (b) True
  12. 12.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
  13. 13.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  14. 14.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sawdust (d) baking soda
  15. 15.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) poke it with a finger (d) taste it
  16. 16.True or false: warm water is needed for the dissolving test. (a) True (b) False
  17. 17.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
  19. 19.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) sugar left unstirred
  20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) cold water (d) a magnet
  21. 21.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
  22. 22.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  23. 23.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
  24. 24.🥄 Which of these dissolves in water? (a) baking soda (b) sawdust (c) chalk powder (d) sand
  25. 25.True or false: powdered sugar dissolves slower. (a) True (b) False
  26. 26.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
  27. 27.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a rainbow (d) a solution
  28. 28.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
  29. 29.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) some stays undissolved (d) all of it dissolves
  30. 30.True or false: sugar in warm water dissolves slower. (a) False (b) True
  31. 31.True or false: a big sugar cube dissolves slower. (a) False (b) True
  32. 32.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) powdered sugar
  33. 33.True or false: table salt dissolves in water. (a) True (b) False
  34. 34.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) sugar (d) two clear glasses
  35. 35.True or false: sugar in icy water dissolves slower. (a) True (b) False
  36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) False (b) True
  37. 37.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  38. 38.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
  39. 39.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a teaspoon (c) warm water (d) a magnet
  40. 40.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed

Answer key

  1. food colour
  2. does not dissolve
  3. needed
  4. not needed
  5. small pebbles
  6. sand
  7. faster
  8. False
  9. needed
  10. the water temperature
  11. False
  12. a grown-up
  13. slower
  14. baking soda
  15. look for leftover grains
  16. True
  17. dissolves in water
  18. we measure it
  19. sugar left unstirred
  20. a magnet
  21. sugar in icy water
  22. slower
  23. sugar in warm water
  24. baking soda
  25. False
  26. sugar stirred well
  27. a solution
  28. True
  29. some stays undissolved
  30. False
  31. True
  32. powdered sugar
  33. True
  34. a mirror
  35. True
  36. False
  37. needed
  38. powdered sugar
  39. a magnet
  40. not needed

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