Dissolving Experiment Worksheet: Warm and Cold Water

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

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