Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 419 · 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 does not dissolve in water? (a) table salt (b) glucose powder (c) sand (d) sugar
2. 2.True or false: sawdust does not dissolve in water. (a) True (b) False
3. 3.⚖️ 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 kind of sugar (d) the water temperature
4. 4.True or false: table salt dissolves in water. (a) False (b) True
5. 5.🔮 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
6. 6.True or false: sugar dissolves in water. (a) True (b) False
7. 7.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
8. 8.True or false: chalk powder dissolves in water. (a) True (b) False
9. 9.True or false: sugar left unstirred dissolves faster. (a) True (b) False
10. 10.True or false: food colour dissolves in water. (a) True (b) False
11. 11.🔮 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
12. 12.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
16. 16.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it floats up (d) it settles at the bottom
17. 17.⚖️ 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) the amount of sugar (c) time to dissolve (d) the amount of water
18. 18.🔍 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
19. 19.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) sugar (d) a magnet
21. 21.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
22. 22.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) particles move faster (d) sugar likes the dark
24. 24.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
26. 26.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
27. 27.🧺 Which of these is needed for the dissolving test? (a) honey (b) a magnet (c) a mirror (d) cold water
28. 28.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar in icy water (d) sugar left unstirred
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) food colour (d) sand
31. 31.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar left unstirred (d) sugar in icy water
32. 32.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a teaspoon (c) a mirror (d) a magnet
33. 33.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
34. 34.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
35. 35.True or false: food colour does not dissolve in water. (a) True (b) False
36. 36.True or false: powdered sugar dissolves slower. (a) True (b) False
37. 37.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the kind of sugar
39. 39.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
40. 40.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water

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