Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 3 · 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: table salt does not dissolve in water. (a) True (b) False
2. 2.True or false: sugar is not needed for the dissolving test. (a) False (b) True
3. 3.True or false: sugar left unstirred dissolves slower. (a) True (b) False
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) honey (d) sugar
5. 5.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) the sugar cube (c) both the same (d) neither of them
7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar in warm water
8. 8.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) keep it in a fridge (d) add more water
9. 9.🥄 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) sawdust (d) chalk powder
10. 10.⚖️ 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 water (c) the water temperature
11. 11.🔍 Which is the odd one out? (a) sand (b) baking soda (c) sawdust (d) cooking oil
12. 12.⚖️ 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) True (b) False
13. 13.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) a clock or timer (c) a teaspoon (d) sugar
15. 15.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sugar (d) sawdust
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
20. 20.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a balloon (d) a clock or timer
22. 22.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
23. 23.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) cooking oil (d) baking soda
24. 24.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
25. 25.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
27. 27.⚖️ 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 keep it the same (c) we change it
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
30. 30.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
31. 31.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) baking soda (d) sand
32. 32.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) table salt (b) food colour (c) glucose powder (d) sawdust
34. 34.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar left unstirred (d) sugar in warm water
35. 35.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) glucose powder
36. 36.⚖️ 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) the stirring (c) time to dissolve
37. 37.True or false: powdered sugar dissolves slower. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) table salt (d) sand
39. 39.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it sank as sand (c) it became air (d) it spread in the water
40. 40.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed

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