Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 436 · 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.🔍 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
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) cold water (c) sugar (d) two clear glasses
4. 4.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
5. 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) two clear glasses (c) warm water (d) a clock or timer
6. 6.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) cold water (c) a clock or timer (d) warm water
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) a clock or timer (c) sugar (d) a teaspoon
8. 8.True or false: warm water is not needed for the dissolving test. (a) True (b) False
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
12. 12.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.True or false: food colour dissolves in water. (a) False (b) True
14. 14.True or false: sugar in icy water dissolves faster. (a) True (b) False
15. 15.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the amount of water (d) the kind of sugar
17. 17.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
18. 18.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) warm water (d) honey
20. 20.True or false: a balloon is needed for the dissolving test. (a) True (b) False
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) time to dissolve (c) the water temperature
22. 22.True or false: sugar in warm water dissolves faster. (a) True (b) False
23. 23.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a clock or timer (c) a comb (d) two clear glasses
24. 24.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) food colour (d) chalk powder
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
27. 27.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it sank as sand (c) it became air (d) it spread in the water
28. 28.🥄 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) table salt (d) sand
29. 29.True or false: cold water is needed for the dissolving test. (a) False (b) True
30. 30.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
31. 31.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster
32. 32.True or false: sugar is not needed for the dissolving test. (a) True (b) False
33. 33.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar left unstirred
34. 34.🔮 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
35. 35.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: sugar left unstirred dissolves slower. (a) False (b) True
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
38. 38.⚖️ 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 amount of water (c) time to dissolve (d) the water temperature
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cold water (c) a balloon (d) sugar
40. 40.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster

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