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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 440 · 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 the one thing we change? (a) the water temperature (b) the stirring (c) time to dissolve (d) the kind of sugar
  2. 2.🛟 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
  3. 3.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  4. 4.🔍 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
  5. 5.True or false: sand dissolves in water. (a) False (b) True
  6. 6.True or false: a balloon is needed for the dissolving test. (a) True (b) False
  7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) sugar (d) a magnet
  8. 8.🥄 Which of these dissolves in water? (a) table salt (b) sand (c) small pebbles (d) sawdust
  9. 9.True or false: a comb is not needed for the dissolving test. (a) False (b) True
  10. 10.True or false: sugar is needed for the dissolving test. (a) False (b) True
  11. 11.🔮 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) some stays undissolved (c) the water turns solid (d) all of it dissolves
  12. 12.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  13. 13.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) honey (d) a teaspoon
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
  16. 16.True or false: sugar stirred well dissolves faster. (a) False (b) True
  17. 17.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) taste it (d) poke it with a finger
  19. 19.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  20. 20.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  21. 21.🥄 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) glucose powder (d) sand
  22. 22.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
  23. 23.🥄 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) baking soda (d) table salt
  24. 24.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  25. 25.🥄 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) baking soda (d) food colour
  26. 26.True or false: cold water is not needed for the dissolving test. (a) True (b) False
  27. 27.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) stir it more (d) keep it in a fridge
  28. 28.True or false: glucose powder does not dissolve in water. (a) False (b) True
  29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) a comb (d) cold water
  30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) cold water (d) a mirror
  31. 31.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) sugar (d) table salt
  32. 32.⚖️ 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
  33. 33.True or false: a big sugar cube dissolves slower. (a) True (b) False
  34. 34.⚖️ 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) False (b) True
  35. 35.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
  36. 36.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  37. 37.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
  38. 38.True or false: cooking oil dissolves in water. (a) False (b) True
  39. 39.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  40. 40.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water

Answer key

  1. the water temperature
  2. a grown-up
  3. does not dissolve
  4. it settles at the bottom
  5. False
  6. False
  7. a magnet
  8. table salt
  9. True
  10. True
  11. some stays undissolved
  12. dissolves in water
  13. dissolves in water
  14. honey
  15. True
  16. True
  17. does not dissolve
  18. look for leftover grains
  19. faster
  20. not needed
  21. sand
  22. not needed
  23. sawdust
  24. does not dissolve
  25. chalk powder
  26. False
  27. let the water evaporate
  28. False
  29. a comb
  30. a mirror
  31. cooking oil
  32. True
  33. True
  34. True
  35. faster
  36. not needed
  37. slower
  38. False
  39. faster
  40. sugar stirred well

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