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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 338 · 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 sugar for the dissolving test? (a) needed (b) not needed
  2. 2.True or false: a big sugar cube dissolves slower. (a) False (b) True
  3. 3.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
  5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
  6. 6.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) cooking oil (d) baking soda
  7. 7.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  8. 8.True or false: small pebbles does not dissolve in water. (a) False (b) True
  9. 9.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  10. 10.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar in warm water (c) powdered sugar (d) sugar stirred well
  11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) sugar (d) honey
  12. 12.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
  13. 13.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  14. 14.🥄 Which of these dissolves in water? (a) sugar (b) sand (c) small pebbles (d) sawdust
  15. 15.True or false: sugar is not needed for the dissolving test. (a) False (b) True
  16. 16.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  17. 17.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar in icy water (c) powdered sugar (d) sugar stirred well
  18. 18.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) stir it more (d) add more water
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
  20. 20.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  21. 21.🥄 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) baking soda (d) glucose powder
  22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a teaspoon (c) a clock or timer (d) two clear glasses
  23. 23.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  24. 24.True or false: powdered sugar dissolves faster. (a) False (b) True
  25. 25.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we measure it (c) we keep it the same
  28. 28.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  29. 29.🥄 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) small pebbles (d) baking soda
  30. 30.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
  31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) cotton wool (d) cold water
  32. 32.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
  33. 33.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
  34. 34.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a comb (c) warm water (d) a teaspoon
  35. 35.True or false: sugar in icy water dissolves slower. (a) False (b) True
  36. 36.🧺 Which of these is needed for the dissolving test? (a) warm water (b) honey (c) a mirror (d) a comb
  37. 37.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  38. 38.⚖️ 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) time to dissolve (d) the kind of sugar
  39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) cold water (c) a teaspoon (d) sugar
  40. 40.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger

Answer key

  1. needed
  2. True
  3. faster
  4. True
  5. powdered sugar
  6. baking soda
  7. faster
  8. True
  9. dissolves in water
  10. sugar left unstirred
  11. honey
  12. needed
  13. dissolves in water
  14. sugar
  15. False
  16. slower
  17. sugar in icy water
  18. let the water evaporate
  19. True
  20. slower
  21. small pebbles
  22. a balloon
  23. slower
  24. True
  25. a grown-up
  26. True
  27. we measure it
  28. does not dissolve
  29. baking soda
  30. True
  31. cotton wool
  32. not needed
  33. faster
  34. a comb
  35. True
  36. warm water
  37. True
  38. the water temperature
  39. a comb
  40. look for leftover grains

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