Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 653 · 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) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
2. 2.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
3. 3.⚖️ 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 kind of sugar (c) the water temperature (d) time to dissolve
4. 4.⚖️ 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
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it dissolves (d) it settles at the bottom
7. 7.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) a mirror (d) cold water
9. 9.🥄 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) food colour (d) table salt
10. 10.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) not at all (d) slower
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
13. 13.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) sugar (d) a mirror
15. 15.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cold water (c) sugar (d) a mirror
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it vanished for ever (d) it spread in the water
18. 18.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
19. 19.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) neither of them (d) both the same
20. 20.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) baking soda
23. 23.True or false: sugar left unstirred dissolves slower. (a) True (b) False
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a clock or timer (d) cotton wool
25. 25.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) sugar (d) food colour
26. 26.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) add more water (d) let the water evaporate
27. 27.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
28. 28.🥄 Which of these dissolves in water? (a) chalk powder (b) baking soda (c) sand (d) sawdust
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) all of it dissolves (d) the sugar turns to salt
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar in warm water (d) sugar in icy water
33. 33.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.True or false: sugar stirred well dissolves faster. (a) True (b) False
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) cold water (d) honey
36. 36.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sand (d) glucose powder
37. 37.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) a comb (d) cotton wool
38. 38.True or false: sawdust does not dissolve in water. (a) True (b) False
39. 39.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) a balloon (d) warm water
40. 40.True or false: cold water is not needed for the dissolving test. (a) True (b) False

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