Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 470 · 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 cotton wool for the dissolving test? (a) needed (b) not needed
2. 2.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it spread in the water (d) it sank as sand
3. 3.True or false: sugar dissolves in water. (a) True (b) False
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
5. 5.True or false: chalk powder does not dissolve in water. (a) False (b) True
6. 6.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the kind of sugar (c) time to dissolve (d) the water temperature
8. 8.True or false: small pebbles does not dissolve in water. (a) False (b) True
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a mirror (d) warm water
10. 10.True or false: cooking oil does not dissolve in water. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
13. 13.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) powdered sugar
14. 14.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) table salt (d) cooking oil
15. 15.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
16. 16.🥄 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) sugar (d) sand
17. 17.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cold water (c) sugar (d) a mirror
18. 18.🔮 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) some stays undissolved (d) the water turns solid
19. 19.⚖️ 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) False (b) True
20. 20.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) sugar likes the dark (d) cold water is wet
21. 21.🥄 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) baking soda
22. 22.True or false: cooking oil dissolves in water. (a) False (b) True
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) the amount of sugar (c) time to dissolve
24. 24.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
25. 25.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the stirring (c) time to dissolve (d) the kind of sugar
27. 27.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
28. 28.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
29. 29.True or false: a big sugar cube dissolves slower. (a) True (b) False
30. 30.⚖️ 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) False (b) True
31. 31.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
32. 32.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: sugar is not needed for the dissolving test. (a) False (b) True
36. 36.True or false: glucose powder does not dissolve in water. (a) True (b) False
37. 37.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) two clear glasses (c) warm water (d) sugar
38. 38.True or false: a magnet is needed for the dissolving test. (a) True (b) False
39. 39.True or false: a balloon is needed for the dissolving test. (a) True (b) False
40. 40.True or false: cold water is needed for the dissolving test. (a) False (b) True

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