Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 59 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
2. 2.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
3. 3.⚖️ 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 amount of sugar (c) the water temperature
4. 4.True or false: powdered sugar dissolves slower. (a) True (b) False
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
6. 6.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) a clock or timer (d) two clear glasses
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) sugar (d) a comb
8. 8.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it sank as sand (d) it vanished for ever
9. 9.True or false: sugar left unstirred dissolves slower. (a) True (b) False
10. 10.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
12. 12.⚖️ 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
13. 13.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar in icy water (d) powdered sugar
14. 14.🥄 Which of these dissolves in water? (a) chalk powder (b) sand (c) sawdust (d) glucose powder
15. 15.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a comb (c) a magnet (d) honey
16. 16.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
17. 17.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) faster (d) slower
18. 18.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
19. 19.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
20. 20.🥄 Which of these dissolves faster? (a) sugar stirred well (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a teaspoon (c) two clear glasses (d) a clock or timer
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
24. 24.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) food colour
25. 25.🥄 Which of these dissolves slower? (a) sugar in warm water (b) a big sugar cube (c) sugar stirred well (d) powdered sugar
26. 26.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
27. 27.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
28. 28.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) warm water (c) a clock or timer (d) a teaspoon
29. 29.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a balloon (d) two clear glasses
30. 30.True or false: baking soda does not dissolve in water. (a) False (b) True
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) honey (c) two clear glasses (d) warm water
32. 32.True or false: sawdust does not dissolve in water. (a) True (b) False
33. 33.True or false: a balloon is needed for the dissolving test. (a) True (b) False
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the amount of water (c) the amount of sugar (d) time to dissolve
35. 35.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
36. 36.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a mirror (c) a clock or timer (d) honey
37. 37.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
38. 38.🥄 Which of these dissolves in water? (a) food colour (b) sawdust (c) sand (d) cooking oil
39. 39.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) let the water evaporate (d) add more water
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a magnet (c) a teaspoon (d) two clear glasses

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