Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 562 · 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.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar left unstirred (d) sugar in icy water
4. 4.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in icy water (d) sugar in warm water
5. 5.True or false: sawdust does not dissolve in water. (a) True (b) False
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
7. 7.🔮 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) some stays undissolved (c) all of it dissolves (d) the water turns solid
8. 8.🥄 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sand (d) small pebbles
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sawdust (d) glucose powder
11. 11.True or false: cold water is not needed for the dissolving test. (a) True (b) False
12. 12.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) honey (d) two clear glasses
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) time to dissolve (c) the water temperature
15. 15.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a mirror (c) a teaspoon (d) warm water
16. 16.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
17. 17.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
18. 18.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
20. 20.True or false: sand dissolves in water. (a) False (b) True
21. 21.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) cold water is wet (d) warm water is thicker
22. 22.True or false: cooking oil dissolves in water. (a) False (b) True
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) a comb (d) a clock or timer
24. 24.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
25. 25.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) sugar stirred well (d) a big sugar cube
26. 26.True or false: sugar is not needed for the dissolving test. (a) True (b) False
27. 27.🥄 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) table salt (d) chalk powder
28. 28.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
29. 29.🛟 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
30. 30.True or false: sugar in icy water dissolves slower. (a) True (b) False
31. 31.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) warm water (c) cold water (d) a balloon
32. 32.⚖️ 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 stirring
33. 33.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
34. 34.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
35. 35.🔍 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
36. 36.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.True or false: sugar left unstirred dissolves slower. (a) True (b) False
38. 38.True or false: glucose powder does not dissolve in water. (a) True (b) False
39. 39.⚖️ 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 kind of sugar (c) the amount of water (d) the stirring
40. 40.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower

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