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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 651 · 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.

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

Answer key

  1. a clock or timer
  2. some stays undissolved
  3. dissolves in water
  4. small pebbles
  5. the amount of water
  6. look for leftover grains
  7. let the water evaporate
  8. False
  9. slower
  10. needed
  11. does not dissolve
  12. needed
  13. time to dissolve
  14. a comb
  15. sawdust
  16. faster
  17. we change it
  18. powdered sugar
  19. True
  20. not needed
  21. False
  22. True
  23. True
  24. dissolves in water
  25. sugar
  26. warm water
  27. faster
  28. True
  29. True
  30. does not dissolve
  31. sugar stirred well
  32. a magnet
  33. needed
  34. a grown-up
  35. True
  36. honey
  37. True
  38. False
  39. sugar
  40. needed

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