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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 924 · 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 sugar in warm water dissolve faster or slower? (a) faster (b) slower
  2. 2.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
  3. 3.True or false: sugar in icy water dissolves slower. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) sugar (b) food colour (c) sawdust (d) baking soda
  5. 5.🔍 Which is the odd one out? (a) sand (b) sawdust (c) cooking oil (d) food colour
  6. 6.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) let the water evaporate (d) keep it in a fridge
  7. 7.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  8. 8.True or false: honey is not needed for the dissolving test. (a) True (b) False
  9. 9.True or false: small pebbles dissolves in water. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) cooking oil (d) small pebbles
  11. 11.🔍 Which is the odd one out? (a) sand (b) sawdust (c) baking soda (d) cooking oil
  12. 12.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) glucose powder (d) sand
  13. 13.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
  14. 14.⚖️ 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
  15. 15.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
  16. 16.True or false: food colour does not dissolve in water. (a) True (b) False
  17. 17.🥄 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) chalk powder
  18. 18.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a mirror (c) warm water (d) a clock or timer
  19. 19.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  20. 20.True or false: sugar stirred well dissolves faster. (a) True (b) False
  21. 21.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
  22. 22.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
  23. 23.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
  24. 24.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) a magnet (d) a mirror
  25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the amount of water (c) time to dissolve (d) the amount of sugar
  26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it
  27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change 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 is needed for the dissolving test? (a) cold water (b) a balloon (c) a comb (d) a magnet
  30. 30.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar in icy water
  31. 31.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) sugar
  32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) a balloon (d) a clock or timer
  33. 33.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
  34. 34.True or false: cold water is not needed for the dissolving test. (a) False (b) True
  35. 35.⚖️ 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
  36. 36.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
  37. 37.True or false: powdered sugar dissolves slower. (a) False (b) True
  38. 38.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) slower (d) the same
  39. 39.🔮 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
  40. 40.True or false: sugar is not needed for the dissolving test. (a) False (b) True

Answer key

  1. faster
  2. needed
  3. True
  4. sawdust
  5. food colour
  6. let the water evaporate
  7. False
  8. True
  9. False
  10. table salt
  11. baking soda
  12. glucose powder
  13. a grown-up
  14. True
  15. look for leftover grains
  16. False
  17. chalk powder
  18. a mirror
  19. needed
  20. True
  21. slower
  22. not needed
  23. not needed
  24. a clock or timer
  25. time to dissolve
  26. we keep it the same
  27. we keep it the same
  28. does not dissolve
  29. cold water
  30. sugar in icy water
  31. sugar
  32. a balloon
  33. powdered sugar
  34. False
  35. True
  36. False
  37. False
  38. faster
  39. powdered sugar
  40. False

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