Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 128 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
2. 2.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
3. 3.True or false: a mirror is needed for the dissolving test. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) table salt (d) glucose powder
5. 5.True or false: warm water is needed for the dissolving test. (a) True (b) False
6. 6.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
7. 7.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
8. 8.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
9. 9.True or false: sawdust dissolves in water. (a) False (b) True
10. 10.⚖️ 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 stirring
11. 11.🧺 Which of these is needed for the dissolving test? (a) cold water (b) a mirror (c) honey (d) a comb
12. 12.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a magnet (c) sugar (d) a clock or timer
14. 14.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it vanished for ever (d) it became air
16. 16.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
17. 17.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) chalk powder (d) small pebbles
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.⚖️ 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
20. 20.🥄 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) sugar (d) table salt
21. 21.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) sugar (d) cooking oil
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a balloon (d) a clock or timer
23. 23.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) sugar in warm water (d) powdered sugar
24. 24.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
25. 25.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) cold water (c) a clock or timer (d) two clear glasses
27. 27.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) glucose powder (d) baking soda
30. 30.True or false: food colour does not dissolve in water. (a) True (b) False
31. 31.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
32. 32.🔮 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) some stays undissolved (d) the sugar turns to salt
33. 33.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) a clock or timer (d) a teaspoon
34. 34.🔍 Which is the odd one out? (a) sand (b) baking soda (c) sugar (d) table salt
35. 35.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a magnet (c) a crystal (d) a rainbow
36. 36.True or false: powdered sugar dissolves faster. (a) False (b) True
37. 37.True or false: table salt does not dissolve in water. (a) False (b) True
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) a clock or timer (d) cold water
40. 40.🥄 Which of these dissolves in water? (a) table salt (b) sand (c) sawdust (d) cooking oil

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