Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 397 · 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) sugar (b) glucose powder (c) sawdust (d) food colour
2. 2.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
3. 3.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
4. 4.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) small pebbles
5. 5.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) two clear glasses (d) honey
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) baking soda (d) table salt
7. 7.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
8. 8.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) keep it in a fridge (d) let the water evaporate
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a clock or timer (c) two clear glasses (d) sugar
10. 10.⚖️ 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 change it (c) we measure it
11. 11.True or false: a big sugar cube dissolves faster. (a) False (b) True
12. 12.🥄 Which of these dissolves in water? (a) table salt (b) sand (c) sawdust (d) chalk powder
13. 13.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
14. 14.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
15. 15.True or false: sugar stirred well dissolves slower. (a) True (b) False
16. 16.True or false: table salt dissolves in water. (a) False (b) True
17. 17.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) sugar in icy water
18. 18.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) powdered sugar (d) sugar in warm water
19. 19.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) sugar
20. 20.🔮 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 water turns solid (d) the sugar turns to salt
21. 21.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it floats up (d) it settles at the bottom
22. 22.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar left unstirred (d) sugar in icy water
23. 23.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
24. 24.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) glucose powder
25. 25.🥄 Which of these dissolves in water? (a) baking soda (b) sawdust (c) small pebbles (d) sand
26. 26.True or false: powdered sugar dissolves slower. (a) False (b) True
27. 27.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) powdered sugar (d) neither of them
28. 28.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🔍 Which is the odd one out? (a) sawdust (b) sand (c) small pebbles (d) glucose powder
30. 30.True or false: chalk powder dissolves in water. (a) True (b) False
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of water (c) the stirring (d) the kind of sugar
32. 32.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
33. 33.True or false: cooking oil dissolves in water. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) food colour (d) small pebbles
35. 35.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a comb (c) two clear glasses (d) a mirror
36. 36.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
37. 37.True or false: a big sugar cube dissolves slower. (a) True (b) False
38. 38.True or false: cold water is not needed for the dissolving test. (a) False (b) True
39. 39.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) two clear glasses (c) sugar (d) cotton wool
40. 40.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed

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