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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 814 · 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.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) slower (d) faster
  2. 2.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
  3. 3.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it turns blue (c) it dissolves (d) it floats up
  4. 4.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  5. 5.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  6. 6.🔮 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 sugar turns to salt (c) the water turns solid (d) some stays undissolved
  7. 7.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) sand (d) chalk powder
  8. 8.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
  9. 9.True or false: warm water is needed for the dissolving test. (a) True (b) False
  10. 10.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) neither of them (d) both the same
  11. 11.True or false: cooking oil dissolves in water. (a) False (b) True
  12. 12.True or false: small pebbles dissolves in water. (a) True (b) False
  13. 13.🥄 Which of these dissolves in water? (a) table salt (b) sand (c) sawdust (d) small pebbles
  14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) warm water (d) a clock or timer
  15. 15.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
  16. 16.🥄 Which of these dissolves in water? (a) sawdust (b) sand (c) glucose powder (d) small pebbles
  17. 17.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
  18. 18.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  19. 19.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) baking soda (d) chalk powder
  20. 20.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) cold water (d) sugar
  21. 21.🔍 Which is the odd one out? (a) sugar (b) food colour (c) sand (d) table salt
  22. 22.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  23. 23.⚖️ 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) time to dissolve (c) the kind of sugar (d) the amount of sugar
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a magnet (d) sugar
  25. 25.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
  26. 26.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) cold water is wet (c) sugar likes the dark (d) warm water is thicker
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) time to dissolve (c) the water temperature
  28. 28.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) sugar (c) a teaspoon (d) a magnet
  29. 29.True or false: sand dissolves in water. (a) True (b) False
  30. 30.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
  31. 31.True or false: powdered sugar dissolves faster. (a) False (b) True
  32. 32.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) sugar in warm water (d) powdered sugar
  33. 33.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
  34. 34.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
  35. 35.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  36. 36.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
  37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of water (c) the stirring (d) the amount of sugar
  38. 38.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) two clear glasses (c) honey (d) cotton wool
  39. 39.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) cooking oil (d) table salt
  40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) a comb (d) a teaspoon

Answer key

  1. faster
  2. needed
  3. it settles at the bottom
  4. needed
  5. slower
  6. some stays undissolved
  7. food colour
  8. True
  9. True
  10. powdered sugar
  11. False
  12. False
  13. table salt
  14. a mirror
  15. let the water evaporate
  16. glucose powder
  17. faster
  18. slower
  19. baking soda
  20. a comb
  21. sand
  22. does not dissolve
  23. the water temperature
  24. a magnet
  25. a grown-up
  26. particles move faster
  27. the kind of sugar
  28. a magnet
  29. False
  30. False
  31. True
  32. a big sugar cube
  33. needed
  34. False
  35. slower
  36. sugar in warm water
  37. time to dissolve
  38. two clear glasses
  39. cooking oil
  40. a comb

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