Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 820 · 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.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
2. 2.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) sugar stirred well
3. 3.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
4. 4.🔮 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
5. 5.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) a big sugar cube (d) sugar stirred well
6. 6.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a balloon (d) a clock or timer
7. 7.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
8. 8.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) honey (c) a teaspoon (d) sugar
10. 10.True or false: sugar left unstirred dissolves faster. (a) False (b) True
11. 11.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) glucose powder
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.True or false: sugar in icy water dissolves slower. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sawdust (d) food colour
17. 17.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
18. 18.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
19. 19.True or false: sugar is needed for the dissolving test. (a) True (b) False
20. 20.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) sawdust (d) food colour
22. 22.🥄 Which of these dissolves in water? (a) sand (b) glucose powder (c) chalk powder (d) cooking oil
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the amount of sugar (c) time to dissolve (d) the water temperature
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) cotton wool (d) warm water
26. 26.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) the sugar cube (d) neither of them
27. 27.⚖️ 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) True (b) False
28. 28.True or false: a mirror is needed for the dissolving test. (a) False (b) True
29. 29.⚖️ 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 sugar (c) the water temperature
30. 30.🔍 Which is the odd one out? (a) sand (b) baking soda (c) small pebbles (d) cooking oil
31. 31.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🥄 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) glucose powder (d) sugar
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
36. 36.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
37. 37.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) sugar (d) cooking oil
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower

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