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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 138 · 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: powdered sugar dissolves faster. (a) True (b) False
  2. 2.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
  3. 3.🧺 Which of these is needed for the dissolving test? (a) cold water (b) a magnet (c) honey (d) cotton wool
  4. 4.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  5. 5.🔍 Which is the odd one out? (a) table salt (b) sugar (c) baking soda (d) sawdust
  6. 6.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) warm water (d) a magnet
  8. 8.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a clock or timer (d) a mirror
  9. 9.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) keep it in a fridge (d) let the water evaporate
  10. 10.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) not at all (d) slower
  11. 11.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) small pebbles (d) chalk powder
  12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) honey (d) a teaspoon
  13. 13.True or false: sugar in icy water dissolves faster. (a) False (b) True
  14. 14.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
  15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) time to dissolve (c) the stirring (d) the water temperature
  16. 16.⚖️ 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
  17. 17.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a mirror (d) a teaspoon
  18. 18.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
  19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
  20. 20.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it settles at the bottom (c) it floats up (d) it turns blue
  21. 21.🧺 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) sugar
  22. 22.🥄 Which of these dissolves slower? (a) sugar in icy water (b) powdered sugar (c) sugar in warm water (d) sugar stirred well
  23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the stirring (d) the water temperature
  24. 24.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
  25. 25.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
  26. 26.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  27. 27.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  28. 28.🥄 Which of these does not dissolve in water? (a) table salt (b) sand (c) glucose powder (d) baking soda
  29. 29.True or false: sugar in icy water dissolves slower. (a) False (b) True
  30. 30.True or false: honey is needed for the dissolving test. (a) False (b) True
  31. 31.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
  32. 32.True or false: table salt does not dissolve in water. (a) True (b) False
  33. 33.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
  34. 34.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the water turns solid (d) the sugar turns to salt
  35. 35.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) small pebbles
  36. 36.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) sugar (c) a magnet (d) a comb
  37. 37.🔍 Which is the odd one out? (a) table salt (b) sand (c) baking soda (d) food colour
  38. 38.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
  39. 39.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a magnet (c) a rainbow (d) a crystal
  40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False

Answer key

  1. True
  2. True
  3. cold water
  4. needed
  5. sawdust
  6. does not dissolve
  7. warm water
  8. a clock or timer
  9. let the water evaporate
  10. faster
  11. glucose powder
  12. honey
  13. False
  14. a grown-up
  15. the water temperature
  16. False
  17. a mirror
  18. slower
  19. False
  20. it settles at the bottom
  21. a balloon
  22. sugar in icy water
  23. time to dissolve
  24. slower
  25. look for leftover grains
  26. does not dissolve
  27. faster
  28. sand
  29. True
  30. False
  31. not needed
  32. False
  33. faster
  34. some stays undissolved
  35. small pebbles
  36. sugar
  37. sand
  38. not needed
  39. a solution
  40. False

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