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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 278 · 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.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
  3. 3.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) warm water is thicker (d) cold water is wet
  4. 4.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  5. 5.🔍 Which is the odd one out? (a) food colour (b) small pebbles (c) table salt (d) sugar
  6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
  7. 7.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
  8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) a clock or timer (d) cotton wool
  9. 9.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  10. 10.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) powdered sugar
  11. 11.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sugar (d) chalk powder
  12. 12.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster
  13. 13.True or false: chalk powder dissolves in water. (a) True (b) False
  14. 14.True or false: sugar stirred well dissolves faster. (a) True (b) False
  15. 15.True or false: warm water is not needed for the dissolving test. (a) True (b) False
  16. 16.True or false: sugar in warm water dissolves faster. (a) True (b) False
  17. 17.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
  18. 18.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  19. 19.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
  20. 20.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
  21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a comb (c) sugar (d) warm water
  22. 22.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
  23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
  24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
  26. 26.True or false: warm water is needed for the dissolving test. (a) False (b) True
  27. 27.True or false: baking soda dissolves in water. (a) True (b) False
  28. 28.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cotton wool (c) warm water (d) a comb
  29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
  30. 30.🧺 Which of these is needed for the dissolving test? (a) honey (b) a teaspoon (c) a mirror (d) cotton wool
  31. 31.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
  32. 32.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
  33. 33.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it dissolves (d) it settles at the bottom
  34. 34.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
  35. 35.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) warm water (d) two clear glasses
  37. 37.🥄 Which of these does not dissolve in water? (a) sugar (b) food colour (c) glucose powder (d) small pebbles
  38. 38.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
  39. 39.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
  40. 40.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) stir it more (c) add more water (d) keep it in a fridge

Answer key

  1. slower
  2. False
  3. particles move faster
  4. dissolves in water
  5. small pebbles
  6. powdered sugar
  7. needed
  8. cotton wool
  9. faster
  10. powdered sugar
  11. sugar
  12. faster
  13. False
  14. True
  15. False
  16. True
  17. a grown-up
  18. dissolves in water
  19. True
  20. faster
  21. a comb
  22. not needed
  23. we keep it the same
  24. False
  25. we keep it the same
  26. True
  27. True
  28. warm water
  29. we change it
  30. a teaspoon
  31. True
  32. look for leftover grains
  33. it settles at the bottom
  34. needed
  35. does not dissolve
  36. a balloon
  37. small pebbles
  38. glucose powder
  39. not needed
  40. let the water evaporate

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