Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 241 · 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.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) baking soda (d) table salt
3. 3.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) a big sugar cube
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
5. 5.🛟 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
6. 6.True or false: sugar in warm water dissolves faster. (a) True (b) False
7. 7.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
8. 8.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
9. 9.⚖️ 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
10. 10.🥄 Which of these dissolves in water? (a) sawdust (b) sugar (c) chalk powder (d) cooking oil
11. 11.True or false: sawdust does not dissolve in water. (a) False (b) True
12. 12.⚖️ 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
13. 13.True or false: warm water is needed for the dissolving test. (a) True (b) False
14. 14.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a teaspoon (c) a magnet (d) a balloon
15. 15.True or false: sugar left unstirred dissolves slower. (a) False (b) True
16. 16.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it became air (d) it spread in the water
17. 17.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
22. 22.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
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.⚖️ 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 water temperature (c) the kind of sugar (d) the stirring
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🥄 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) food colour (d) baking soda
27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) all of it dissolves (d) the water turns solid
28. 28.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
29. 29.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) cotton wool (d) two clear glasses
30. 30.🥄 Which of these dissolves in water? (a) baking soda (b) sawdust (c) small pebbles (d) chalk powder
31. 31.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) two clear glasses (c) warm water (d) sugar
33. 33.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) two clear glasses (d) a teaspoon
34. 34.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a balloon (d) warm water
35. 35.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
36. 36.⚖️ 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
37. 37.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) stir it more (d) keep it in a fridge
38. 38.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) honey (c) warm water (d) a clock or timer
40. 40.True or false: table salt does not dissolve in water. (a) False (b) True

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