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Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 13 · 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.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
  2. 2.🥄 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) glucose powder (d) small pebbles
  3. 3.🛟 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
  4. 4.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
  5. 5.True or false: sugar in warm water dissolves faster. (a) False (b) True
  6. 6.🥄 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) small pebbles (d) sugar
  7. 7.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar left unstirred (c) sugar stirred well (d) powdered sugar
  8. 8.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) add more water (d) keep it in a fridge
  9. 9.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) powdered sugar (d) sugar in warm water
  10. 10.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a mirror (c) two clear glasses (d) sugar
  11. 11.True or false: small pebbles dissolves in water. (a) False (b) True
  12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
  13. 13.⚖️ 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) the amount of water (c) the water temperature (d) the kind of sugar
  14. 14.⚖️ 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 measure it (c) we keep it the same
  15. 15.🥄 Which of these dissolves in water? (a) food colour (b) sawdust (c) small pebbles (d) cooking oil
  16. 16.True or false: small pebbles does not dissolve in water. (a) False (b) True
  17. 17.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
  18. 18.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
  19. 19.True or false: warm water is not needed for the dissolving test. (a) False (b) True
  20. 20.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
  21. 21.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) some stays undissolved (c) the water turns solid (d) all of it dissolves
  22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
  23. 23.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
  24. 24.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) sugar in warm water
  25. 25.True or false: sugar in warm water dissolves slower. (a) False (b) True
  26. 26.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) powdered sugar
  27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a mirror (c) warm water (d) cold water
  28. 28.True or false: table salt dissolves in water. (a) False (b) True
  29. 29.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
  30. 30.True or false: honey is needed for the dissolving test. (a) False (b) True
  31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
  32. 32.⚖️ 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
  33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) a teaspoon (d) two clear glasses
  34. 34.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) sugar (d) a mirror
  35. 35.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) sugar likes the dark (d) warm water is thicker
  36. 36.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
  37. 37.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar stirred well (d) sugar in warm water
  38. 38.🔍 Which is the odd one out? (a) sawdust (b) sand (c) cooking oil (d) sugar
  39. 39.True or false: cold water is needed for the dissolving test. (a) True (b) False
  40. 40.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed

Answer key

  1. needed
  2. small pebbles
  3. a grown-up
  4. a solution
  5. True
  6. sugar
  7. sugar left unstirred
  8. let the water evaporate
  9. a big sugar cube
  10. a mirror
  11. False
  12. True
  13. the water temperature
  14. we keep it the same
  15. food colour
  16. True
  17. slower
  18. slower
  19. False
  20. needed
  21. some stays undissolved
  22. False
  23. True
  24. sugar in warm water
  25. False
  26. powdered sugar
  27. a mirror
  28. True
  29. glucose powder
  30. False
  31. we keep it the same
  32. True
  33. a magnet
  34. sugar
  35. particles move faster
  36. faster
  37. sugar in icy water
  38. sugar
  39. True
  40. not needed

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