Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 828 · 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.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
2. 2.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
3. 3.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a magnet (c) a balloon (d) a mirror
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
5. 5.True or false: food colour does not dissolve in water. (a) False (b) True
6. 6.True or false: sugar in warm water dissolves faster. (a) False (b) True
7. 7.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
8. 8.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: cooking oil does not dissolve in water. (a) True (b) False
11. 11.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
13. 13.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
14. 14.True or false: baking soda does not dissolve in water. (a) False (b) True
15. 15.True or false: sugar in icy water dissolves faster. (a) False (b) True
16. 16.True or false: a comb is needed for the dissolving test. (a) True (b) False
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the amount of sugar (c) the water temperature (d) the kind of sugar
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔍 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
20. 20.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it became air (d) it sank as sand
21. 21.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
24. 24.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
25. 25.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
26. 26.True or false: warm water is needed for the dissolving test. (a) False (b) True
27. 27.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
28. 28.⚖️ 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 kind of sugar
29. 29.True or false: chalk powder dissolves in water. (a) False (b) True
30. 30.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) a clock or timer (c) warm water (d) a teaspoon
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
32. 32.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar stirred well (c) sugar in warm water (d) powdered sugar
33. 33.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
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 sugar turns to salt (d) the water turns solid
35. 35.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
36. 36.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) sugar stirred well (d) a big sugar cube
37. 37.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) a mirror
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a teaspoon (c) cold water (d) warm water

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