Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 135 · 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 a comb for the dissolving test? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) a teaspoon (d) a mirror
3. 3.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
4. 4.🔍 Which is the odd one out? (a) sugar (b) table salt (c) cooking oil (d) baking soda
5. 5.⚖️ 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
6. 6.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) sugar (c) a magnet (d) a mirror
8. 8.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster
9. 9.🔮 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 water turns solid (c) the sugar turns to salt (d) some stays undissolved
10. 10.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
11. 11.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) add more water (d) let the water evaporate
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) a balloon (d) cold water
13. 13.🥄 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sugar (d) chalk powder
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) warm water (c) two clear glasses (d) cotton wool
15. 15.True or false: warm water is needed for the dissolving test. (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 keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🥄 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) baking soda (d) chalk powder
19. 19.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) table salt (d) sawdust
20. 20.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
21. 21.⚖️ 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) True (b) False
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) True (b) False
23. 23.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) two clear glasses (c) a magnet (d) sugar
24. 24.True or false: a mirror is needed for the dissolving test. (a) True (b) False
25. 25.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
28. 28.🥄 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) table salt (d) sawdust
29. 29.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
30. 30.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it became air (d) it vanished for ever
31. 31.True or false: baking soda dissolves in water. (a) False (b) True
32. 32.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
33. 33.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.⚖️ 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 water
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) honey (d) warm water
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
39. 39.⚖️ 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 water temperature (c) the amount of water (d) time to dissolve
40. 40.True or false: a big sugar cube dissolves slower. (a) False (b) True

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