Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 919 · 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.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
2. 2.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in icy water (c) sugar in warm water (d) powdered sugar
3. 3.True or false: a magnet is needed for the dissolving test. (a) False (b) True
4. 4.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
6. 6.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
7. 7.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
8. 8.🥄 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) table salt (d) sand
9. 9.🥄 Which of these dissolves in water? (a) chalk powder (b) sand (c) cooking oil (d) sugar
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) the sugar turns to salt (d) all of it dissolves
11. 11.True or false: sugar left unstirred dissolves faster. (a) True (b) False
12. 12.🔍 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 vanished for ever (d) it became air
13. 13.⚖️ 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
14. 14.True or false: sawdust does not dissolve in water. (a) True (b) False
15. 15.True or false: a comb is not needed for the dissolving test. (a) False (b) True
16. 16.True or false: baking soda dissolves in water. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) table salt (b) sand (c) small pebbles (d) chalk powder
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the water temperature (c) the stirring (d) the amount of water
19. 19.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a comb (c) a balloon (d) sugar
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
21. 21.⚖️ 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
22. 22.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
26. 26.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
27. 27.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
28. 28.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
29. 29.⚖️ 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 kind of sugar (c) the water temperature (d) the stirring
30. 30.🥄 Which of these does not dissolve in water? (a) food colour (b) sugar (c) sand (d) glucose powder
31. 31.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
32. 32.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) baking soda (d) table salt
34. 34.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
35. 35.True or false: sugar in icy water dissolves slower. (a) True (b) False
36. 36.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) a mirror (d) cold water
38. 38.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) powdered sugar
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) two clear glasses (c) cold water (d) sugar

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