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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 750 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it turns blue (c) it floats up (d) it settles at the bottom
  2. 2.True or false: a mirror is needed for the dissolving test. (a) True (b) False
  3. 3.⚖️ 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) False (b) True
  4. 4.🔍 Which is the odd one out? (a) sawdust (b) sand (c) sugar (d) small pebbles
  5. 5.True or false: sugar in warm water dissolves slower. (a) True (b) False
  6. 6.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
  8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
  9. 9.True or false: warm water is needed for the dissolving test. (a) False (b) True
  10. 10.True or false: sugar in icy water dissolves slower. (a) False (b) True
  11. 11.🥄 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sand (d) sugar
  12. 12.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
  13. 13.True or false: powdered sugar dissolves faster. (a) False (b) True
  14. 14.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
  15. 15.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
  16. 16.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  17. 17.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) cotton wool (d) a teaspoon
  18. 18.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
  19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) cold water (d) two clear glasses
  20. 20.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
  21. 21.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) cooking oil (d) sand
  22. 22.🥄 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) food colour (d) table salt
  23. 23.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) sugar in icy water
  24. 24.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar stirred well (d) sugar left unstirred
  25. 25.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cold water (c) a balloon (d) cotton wool
  26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a teaspoon (c) two clear glasses (d) a balloon
  27. 27.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
  29. 29.True or false: sand dissolves in water. (a) True (b) False
  30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) warm water (d) a comb
  31. 31.True or false: warm water is not needed for the dissolving test. (a) True (b) False
  32. 32.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
  33. 33.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) slower (d) the same
  34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
  35. 35.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a balloon (d) two clear glasses
  36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
  37. 37.🧺 Which of these is needed for the dissolving test? (a) a comb (b) cotton wool (c) sugar (d) honey
  38. 38.True or false: a big sugar cube dissolves slower. (a) True (b) False
  39. 39.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
  40. 40.True or false: powdered sugar dissolves slower. (a) False (b) True

Answer key

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

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