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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 154 · 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 a comb for the dissolving test? (a) needed (b) not needed
  2. 2.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar in icy water (d) sugar stirred well
  3. 3.True or false: warm water is not needed for the dissolving test. (a) False (b) True
  4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) neither of them (d) the sugar cube
  5. 5.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a magnet (d) sugar
  6. 6.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
  7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
  8. 8.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) chalk powder (d) table salt
  10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) the water turns solid (d) all of it dissolves
  11. 11.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
  12. 12.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) keep it in a fridge (d) let the water evaporate
  13. 13.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) two clear glasses (d) cotton wool
  14. 14.True or false: powdered sugar dissolves faster. (a) True (b) False
  15. 15.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
  16. 16.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a mirror (c) cotton wool (d) a balloon
  17. 17.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  18. 18.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  19. 19.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
  20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) cotton wool (d) a clock or timer
  21. 21.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  22. 22.True or false: sand dissolves in water. (a) True (b) False
  23. 23.True or false: sugar is not needed for the dissolving test. (a) False (b) True
  24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) cold water (d) a clock or timer
  25. 25.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  26. 26.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) sugar in warm water
  27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a comb (d) a clock or timer
  28. 28.True or false: sawdust does not dissolve in water. (a) True (b) False
  29. 29.⚖️ 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) True (b) False
  30. 30.🛟 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
  31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a balloon (c) warm water (d) two clear glasses
  32. 32.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) table salt
  33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the amount of water (d) the amount of sugar
  34. 34.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it became air (d) it sank as sand
  35. 35.True or false: sugar in warm water dissolves faster. (a) False (b) True
  36. 36.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) baking soda
  39. 39.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) food colour (d) sugar
  40. 40.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False

Answer key

  1. not needed
  2. sugar in icy water
  3. False
  4. powdered sugar
  5. sugar
  6. faster
  7. False
  8. True
  9. chalk powder
  10. some stays undissolved
  11. needed
  12. let the water evaporate
  13. cotton wool
  14. True
  15. True
  16. a teaspoon
  17. faster
  18. not needed
  19. look for leftover grains
  20. cotton wool
  21. slower
  22. False
  23. False
  24. a mirror
  25. dissolves in water
  26. sugar in warm water
  27. a comb
  28. True
  29. True
  30. a grown-up
  31. a balloon
  32. table salt
  33. the water temperature
  34. it spread in the water
  35. True
  36. dissolves in water
  37. False
  38. baking soda
  39. cooking oil
  40. False

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