Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 413 · 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.🥄 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) sand (d) glucose powder
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
4. 4.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it dissolves (c) it turns blue (d) it floats up
5. 5.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
6. 6.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) some stays undissolved (d) the sugar turns to salt
7. 7.True or false: chalk powder does not dissolve in water. (a) True (b) False
8. 8.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: a balloon is needed for the dissolving test. (a) True (b) False
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the stirring (c) the amount of sugar (d) the water temperature
11. 11.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) keep it in a fridge (d) stir it more
12. 12.⚖️ 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
13. 13.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
14. 14.🥄 Which of these does not dissolve in water? (a) food colour (b) sugar (c) table salt (d) small pebbles
15. 15.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) baking soda
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a magnet (d) cold water
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) two clear glasses (d) a mirror
18. 18.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) two clear glasses (c) a mirror (d) warm water
19. 19.True or false: sugar left unstirred dissolves faster. (a) True (b) False
20. 20.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) warm water (d) cold water
21. 21.True or false: sugar in warm water dissolves faster. (a) True (b) False
22. 22.⚖️ 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 water temperature (c) the kind of sugar (d) time to dissolve
23. 23.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
24. 24.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
25. 25.True or false: glucose powder dissolves in water. (a) False (b) True
26. 26.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar stirred well (d) sugar in warm water
27. 27.True or false: honey is needed for the dissolving test. (a) False (b) True
28. 28.True or false: food colour dissolves in water. (a) True (b) False
29. 29.True or false: sugar is not needed for the dissolving test. (a) False (b) True
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
32. 32.🥄 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) chalk powder (d) table salt
33. 33.🔍 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 vanished for ever (d) it sank as sand
34. 34.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) sugar (d) honey
35. 35.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) table salt (d) sugar
38. 38.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
39. 39.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
40. 40.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water

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