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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 262 · 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.True or false: sugar in warm water dissolves faster. (a) True (b) False
  2. 2.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  3. 3.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it became air (d) it sank as sand
  4. 4.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
  5. 5.🥄 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) food colour (d) baking soda
  6. 6.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all
  7. 7.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a teaspoon (c) a balloon (d) two clear glasses
  8. 8.True or false: sugar does not dissolve in water. (a) True (b) False
  9. 9.True or false: cooking oil dissolves in water. (a) True (b) False
  10. 10.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
  11. 11.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
  12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
  13. 13.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  14. 14.⚖️ 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 measure it (c) we change it
  15. 15.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a crystal (d) a magnet
  16. 16.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
  17. 17.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) two clear glasses (c) a magnet (d) a comb
  18. 18.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
  19. 19.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well
  20. 20.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the kind of sugar (c) time to dissolve (d) the amount of sugar
  22. 22.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
  23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a teaspoon (c) sugar (d) cold water
  24. 24.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a balloon (c) honey (d) sugar
  25. 25.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) baking soda (d) sand
  26. 26.True or false: a big sugar cube dissolves slower. (a) False (b) True
  27. 27.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) sand (d) baking soda
  28. 28.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) table salt (d) food colour
  29. 29.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
  30. 30.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) sugar in icy water
  31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) a clock or timer (d) sugar
  32. 32.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
  33. 33.🥄 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) table salt (d) glucose powder
  34. 34.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
  35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
  36. 36.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) keep it in a fridge (d) add more water
  37. 37.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) particles move faster (d) cold water is wet
  38. 38.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  39. 39.True or false: warm water is not needed for the dissolving test. (a) True (b) False
  40. 40.True or false: a comb is not needed for the dissolving test. (a) False (b) True

Answer key

  1. True
  2. does not dissolve
  3. it spread in the water
  4. not needed
  5. small pebbles
  6. faster
  7. a balloon
  8. False
  9. False
  10. look for leftover grains
  11. needed
  12. we keep it the same
  13. dissolves in water
  14. we change it
  15. a solution
  16. needed
  17. two clear glasses
  18. True
  19. sugar stirred well
  20. slower
  21. time to dissolve
  22. True
  23. a comb
  24. sugar
  25. baking soda
  26. True
  27. sand
  28. chalk powder
  29. a grown-up
  30. sugar in icy water
  31. a mirror
  32. needed
  33. cooking oil
  34. False
  35. True
  36. let the water evaporate
  37. particles move faster
  38. dissolves in water
  39. False
  40. True

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