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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 333 · 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.

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  1. 1.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) warm water (c) a teaspoon (d) cold water
  2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a clock or timer (c) cold water (d) a teaspoon
  3. 3.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
  4. 4.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  5. 5.True or false: sugar in icy water dissolves faster. (a) False (b) True
  6. 6.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) sugar (d) table salt
  7. 7.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the water turns solid (d) the sugar turns to salt
  8. 8.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a teaspoon (c) a mirror (d) honey
  9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
  10. 10.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a comb (c) a clock or timer (d) sugar
  11. 11.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a balloon (c) a magnet (d) sugar
  12. 12.True or false: sugar does not dissolve in water. (a) True (b) False
  13. 13.🛟 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
  14. 14.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) baking soda (d) sawdust
  15. 15.True or false: sugar in warm water dissolves faster. (a) False (b) True
  16. 16.🥄 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) food colour (d) sugar
  17. 17.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  18. 18.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
  19. 19.🔍 Which is the odd one out? (a) sand (b) sawdust (c) chalk powder (d) food colour
  20. 20.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
  21. 21.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) baking soda
  22. 22.⚖️ 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 change it (c) we keep it the same
  23. 23.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
  24. 24.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
  25. 25.True or false: a balloon is needed for the dissolving test. (a) True (b) False
  26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the stirring
  28. 28.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
  29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) warm water (d) a teaspoon
  30. 30.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) sugar likes the dark (d) warm water is thicker
  31. 31.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) let the water evaporate (d) add more water
  32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
  33. 33.True or false: sand does not dissolve in water. (a) False (b) True
  34. 34.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
  35. 35.True or false: glucose powder does not dissolve in water. (a) True (b) False
  36. 36.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) cotton wool (d) cold water
  38. 38.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it spread in the water (c) it sank as sand (d) it vanished for ever
  39. 39.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a clock or timer (c) a magnet (d) honey
  40. 40.True or false: sugar stirred well dissolves slower. (a) True (b) False

Answer key

  1. a magnet
  2. a magnet
  3. a grown-up
  4. not needed
  5. False
  6. cooking oil
  7. some stays undissolved
  8. a teaspoon
  9. True
  10. a comb
  11. sugar
  12. False
  13. look for leftover grains
  14. sawdust
  15. True
  16. chalk powder
  17. slower
  18. sugar in warm water
  19. food colour
  20. powdered sugar
  21. chalk powder
  22. we measure it
  23. True
  24. False
  25. False
  26. faster
  27. the stirring
  28. True
  29. a mirror
  30. particles move faster
  31. let the water evaporate
  32. False
  33. True
  34. False
  35. False
  36. False
  37. cotton wool
  38. it spread in the water
  39. a clock or timer
  40. False

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