Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 284 · 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) dissolves in water (b) does not dissolve
2. 2.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) small pebbles (d) sugar
3. 3.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
4. 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
5. 5.🥄 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) baking soda (d) sugar
6. 6.🔍 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
7. 7.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
8. 8.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
9. 9.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar in warm water (d) sugar stirred well
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) two clear glasses (d) a magnet
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
14. 14.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a balloon (c) cold water (d) a teaspoon
16. 16.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
17. 17.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in warm water (d) sugar in icy water
18. 18.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) chalk powder (d) sand
20. 20.True or false: cooking oil does not dissolve in water. (a) False (b) True
21. 21.True or false: chalk powder dissolves in water. (a) True (b) False
22. 22.🔮 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) some stays undissolved (d) the sugar turns to salt
23. 23.True or false: a comb is needed for the dissolving test. (a) True (b) False
24. 24.True or false: sand does not dissolve in water. (a) True (b) False
25. 25.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
26. 26.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a mirror (c) a magnet (d) a teaspoon
27. 27.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
28. 28.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a magnet (c) a mirror (d) honey
29. 29.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cold water (c) a comb (d) two clear glasses
30. 30.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
31. 31.True or false: sugar in warm water dissolves faster. (a) True (b) False
32. 32.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
33. 33.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) a clock or timer (d) a magnet
34. 34.⚖️ 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 amount of sugar (c) time to dissolve
35. 35.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
36. 36.True or false: honey is needed for the dissolving test. (a) False (b) True
37. 37.⚖️ 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
38. 38.True or false: glucose powder dissolves in water. (a) True (b) False
39. 39.⚖️ 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 water temperature (c) the stirring (d) time to dissolve
40. 40.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running

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