Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 570 · 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.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) food colour (d) cooking oil
2. 2.⚖️ 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 change it (c) we measure it
3. 3.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar in icy water (d) powdered sugar
4. 4.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) sugar likes the dark (c) warm water is thicker (d) particles move faster
5. 5.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
6. 6.🥄 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) sugar (d) food colour
7. 7.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
8. 8.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧺 Which of these is needed for the dissolving test? (a) cold water (b) honey (c) a magnet (d) cotton wool
10. 10.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.True or false: sugar is not needed for the dissolving test. (a) False (b) True
12. 12.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
14. 14.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water
15. 15.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
16. 16.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the stirring (c) the amount of water (d) the kind of sugar
18. 18.True or false: sand does not dissolve in water. (a) False (b) True
19. 19.🥄 Which of these dissolves in water? (a) sawdust (b) sand (c) sugar (d) small pebbles
20. 20.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) two clear glasses (c) sugar (d) honey
21. 21.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
24. 24.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
25. 25.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) glucose powder (d) baking soda
26. 26.⚖️ 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 kind of sugar (c) the amount of water (d) time to dissolve
27. 27.True or false: powdered sugar dissolves slower. (a) True (b) False
28. 28.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
31. 31.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar in warm water
32. 32.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
33. 33.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it floats up (c) it turns blue (d) it dissolves
34. 34.🥄 Which of these dissolves in water? (a) table salt (b) sand (c) chalk powder (d) small pebbles
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) warm water (d) honey
36. 36.True or false: baking soda does not dissolve in water. (a) True (b) False
37. 37.⚖️ 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
38. 38.True or false: cold water is not needed for the dissolving test. (a) False (b) True
39. 39.🔮 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
40. 40.True or false: chalk powder dissolves in water. (a) True (b) False

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