Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 921 · 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 is not needed for the dissolving test? (a) cold water (b) a teaspoon (c) honey (d) a clock or timer
2. 2.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) table salt
3. 3.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
4. 4.True or false: sawdust dissolves in water. (a) True (b) False
5. 5.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a magnet (d) a crystal
6. 6.⚖️ 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) time to dissolve (c) the amount of sugar
7. 7.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) two clear glasses (c) a magnet (d) sugar
8. 8.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
9. 9.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
11. 11.True or false: food colour dissolves in water. (a) False (b) True
12. 12.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
13. 13.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
15. 15.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) cold water (d) cotton wool
16. 16.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.True or false: sugar in icy water dissolves slower. (a) True (b) False
18. 18.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a comb (c) sugar (d) a clock or timer
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 change it (b) we keep it the same (c) we measure it
21. 21.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar left unstirred (d) sugar in warm water
22. 22.⚖️ 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) time to dissolve (c) the kind of sugar (d) the water temperature
23. 23.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
24. 24.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a balloon (c) a clock or timer (d) a teaspoon
26. 26.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
28. 28.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar in warm water (c) powdered sugar (d) sugar stirred well
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
31. 31.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
32. 32.True or false: sugar in warm water dissolves faster. (a) False (b) True
33. 33.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) False (b) True
35. 35.⚖️ 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 water temperature (c) the amount of water (d) time to dissolve
36. 36.True or false: warm water is not needed for the dissolving test. (a) False (b) True
37. 37.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) chalk powder (d) sugar
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: cooking oil does not dissolve in water. (a) True (b) False

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