Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 103 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the amount of water (c) time to dissolve (d) the water temperature
2. 2.True or false: sugar in warm water dissolves faster. (a) True (b) False
3. 3.🔮 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
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
5. 5.🥄 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) chalk powder (d) table salt
6. 6.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
7. 7.⚖️ 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
8. 8.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
9. 9.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) sand (d) sugar
10. 10.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) sugar likes the dark (c) particles move faster (d) warm water is thicker
11. 11.True or false: cold water is needed for the dissolving test. (a) False (b) True
12. 12.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) cold water (d) a balloon
14. 14.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a teaspoon (c) a mirror (d) a comb
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a magnet (c) warm water (d) a teaspoon
17. 17.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) slower (c) the same (d) faster
18. 18.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🥄 Which of these dissolves in water? (a) food colour (b) sand (c) cooking oil (d) chalk powder
21. 21.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) a clock or timer (d) cotton wool
24. 24.⚖️ 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
25. 25.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it dissolves (d) it settles at the bottom
26. 26.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
27. 27.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
29. 29.⚖️ 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 amount of sugar
30. 30.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) small pebbles
31. 31.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.True or false: sugar stirred well dissolves faster. (a) False (b) True
33. 33.True or false: sand dissolves in water. (a) True (b) False
34. 34.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) honey (d) warm water
35. 35.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
36. 36.🔍 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
37. 37.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
38. 38.True or false: table salt dissolves in water. (a) True (b) False
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.⚖️ 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 kind of sugar (c) the water temperature

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