Dissolving Experiment Worksheet: Warm and Cold Water

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

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