Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 650 · 40 questions

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.

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

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