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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 385 · 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.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  2. 2.True or false: glucose powder dissolves in water. (a) True (b) False
  3. 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) the sugar cube (c) both the same (d) neither of them
  4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
  5. 5.True or false: sugar left unstirred dissolves slower. (a) False (b) True
  6. 6.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  7. 7.True or false: small pebbles dissolves in water. (a) True (b) False
  8. 8.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in icy water (d) sugar in warm water
  9. 9.True or false: sawdust does not dissolve in water. (a) True (b) False
  10. 10.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar left unstirred (d) sugar in warm water
  11. 11.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a mirror (c) cold water (d) a clock or timer
  12. 12.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
  13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) time to dissolve
  14. 14.⚖️ 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
  15. 15.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
  16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a magnet (d) two clear glasses
  17. 17.True or false: glucose powder does not dissolve in water. (a) False (b) True
  18. 18.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) a balloon (d) sugar
  19. 19.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) small pebbles
  20. 20.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) cooking oil (d) sand
  21. 21.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) cooking oil (d) glucose powder
  22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) food colour (d) cooking oil
  23. 23.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
  24. 24.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a crystal (d) a magnet
  25. 25.🥄 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) food colour (d) sawdust
  26. 26.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) some stays undissolved (d) the sugar turns to salt
  28. 28.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  29. 29.True or false: food colour does not dissolve in water. (a) False (b) True
  30. 30.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
  31. 31.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
  32. 32.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) a big sugar cube (d) sugar in warm water
  33. 33.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  34. 34.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a mirror (c) cotton wool (d) two clear glasses
  35. 35.🧺 Which of these is needed for the dissolving test? (a) honey (b) a mirror (c) cotton wool (d) a clock or timer
  36. 36.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) the same (d) slower
  37. 37.True or false: a comb is needed for the dissolving test. (a) False (b) True
  38. 38.True or false: cooking oil dissolves in water. (a) True (b) False
  39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) cold water (d) warm water
  40. 40.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) sugar (d) a clock or timer

Answer key

  1. needed
  2. True
  3. powdered sugar
  4. we keep it the same
  5. True
  6. needed
  7. False
  8. sugar in icy water
  9. True
  10. sugar left unstirred
  11. a mirror
  12. look for leftover grains
  13. the amount of water
  14. the stirring
  15. faster
  16. a magnet
  17. False
  18. sugar
  19. small pebbles
  20. sugar
  21. glucose powder
  22. food colour
  23. a grown-up
  24. a solution
  25. sawdust
  26. needed
  27. some stays undissolved
  28. not needed
  29. False
  30. not needed
  31. True
  32. a big sugar cube
  33. slower
  34. two clear glasses
  35. a clock or timer
  36. faster
  37. False
  38. False
  39. a mirror
  40. a comb

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