Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 459 · 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 sugar stirred well dissolve faster or slower? (a) faster (b) slower
2. 2.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.True or false: a balloon is needed for the dissolving test. (a) True (b) False
5. 5.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) warm water is thicker (d) cold water is wet
6. 6.True or false: sugar stirred well dissolves faster. (a) True (b) False
7. 7.True or false: sand dissolves in water. (a) False (b) True
8. 8.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar in icy water (d) sugar stirred well
10. 10.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) sugar (d) a clock or timer
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the water temperature (c) the stirring (d) the amount of sugar
12. 12.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
13. 13.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.⚖️ 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
15. 15.🔍 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
16. 16.🥄 Which of these dissolves faster? (a) sugar in warm water (b) a big sugar cube (c) sugar left unstirred (d) sugar in icy water
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the water temperature (c) the kind of sugar (d) time to dissolve
18. 18.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sawdust (d) chalk powder
19. 19.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) neither of them (d) the sugar cube
22. 22.🧺 Which of these is needed for the dissolving test? (a) a comb (b) cotton wool (c) a balloon (d) cold water
23. 23.True or false: sawdust does not dissolve in water. (a) False (b) True
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) small pebbles (d) table salt
30. 30.True or false: glucose powder does not dissolve in water. (a) True (b) False
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) a mirror (d) warm water
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a magnet (c) a clock or timer (d) warm water
33. 33.🛟 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
34. 34.True or false: a comb is needed for the dissolving test. (a) True (b) False
35. 35.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
36. 36.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) stir it more (d) let the water evaporate
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a teaspoon (c) sugar (d) two clear glasses
39. 39.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it sank as sand (d) it became air
40. 40.True or false: sugar left unstirred dissolves faster. (a) True (b) False

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