Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 863 · 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 slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar in icy water
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) time to dissolve (c) the water temperature
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🛟 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
6. 6.🔍 Which is the odd one out? (a) sawdust (b) sand (c) cooking oil (d) baking soda
7. 7.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) particles move faster (d) cold water is wet
8. 8.🔮 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
9. 9.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a comb (c) a balloon (d) cotton wool
10. 10.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
11. 11.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
12. 12.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
14. 14.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) baking soda (d) food colour
15. 15.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) a teaspoon (d) a clock or timer
17. 17.True or false: a big sugar cube dissolves faster. (a) True (b) False
18. 18.True or false: sugar stirred well dissolves faster. (a) False (b) True
19. 19.🥄 Which of these dissolves in water? (a) small pebbles (b) sugar (c) cooking oil (d) sawdust
20. 20.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) small pebbles (d) table salt
21. 21.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
22. 22.True or false: warm water is not needed for the dissolving test. (a) True (b) False
23. 23.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
24. 24.⚖️ 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 sugar
25. 25.True or false: table salt dissolves in water. (a) True (b) False
26. 26.🥄 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) sugar (d) food colour
27. 27.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
28. 28.True or false: a big sugar cube dissolves slower. (a) True (b) False
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) the amount of sugar (b) time to dissolve (c) the water temperature (d) the kind of sugar
30. 30.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
31. 31.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) sand
33. 33.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a teaspoon (c) sugar (d) a comb
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a clock or timer (d) honey
36. 36.🧺 Which of these is needed for the dissolving test? (a) honey (b) a clock or timer (c) a magnet (d) cotton wool
37. 37.🧺 Which of these is needed for the dissolving test? (a) sugar (b) cotton wool (c) a mirror (d) honey
38. 38.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
39. 39.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
40. 40.True or false: glucose powder does not dissolve in water. (a) True (b) False

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