Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 725 · 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.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
2. 2.🥄 Which of these dissolves in water? (a) sand (b) sawdust (c) sugar (d) chalk powder
3. 3.True or false: sugar does not dissolve in water. (a) False (b) True
4. 4.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.True or false: baking soda does not dissolve in water. (a) False (b) True
6. 6.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
7. 7.True or false: sugar left unstirred dissolves faster. (a) True (b) False
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
9. 9.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
10. 10.True or false: sawdust does not dissolve in water. (a) False (b) True
11. 11.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) look for leftover grains (d) taste it
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.True or false: food colour does not dissolve in water. (a) False (b) True
14. 14.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
17. 17.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) warm water (d) a comb
20. 20.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cotton wool (c) a teaspoon (d) honey
21. 21.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) sugar (c) cotton wool (d) a mirror
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the water temperature (d) the amount of water
23. 23.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sand (d) food colour
24. 24.🥄 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) sugar (d) chalk powder
25. 25.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
26. 26.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) small pebbles (d) food colour
27. 27.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a magnet (c) a solution (d) a crystal
28. 28.True or false: warm water is needed for the dissolving test. (a) True (b) False
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) two clear glasses (c) a clock or timer (d) warm water
30. 30.⚖️ 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
31. 31.⚖️ 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 amount of water (c) the kind of sugar (d) time to dissolve
32. 32.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
33. 33.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar in warm water (d) sugar stirred well
34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) two clear glasses (c) warm water (d) cold water
35. 35.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) powdered sugar (c) the sugar cube (d) neither of them
36. 36.True or false: cold water is not needed for the dissolving test. (a) True (b) False
37. 37.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
38. 38.True or false: small pebbles does not dissolve in water. (a) False (b) True
39. 39.🔍 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 became air (d) it vanished for ever
40. 40.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve

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