Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 107 · 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) sand (b) sawdust (c) chalk powder (d) table salt
2. 2.⚖️ 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 kind of sugar (c) the stirring (d) the water temperature
3. 3.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
5. 5.⚖️ 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) the amount of water (c) time to dissolve
6. 6.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it floats up (c) it turns blue (d) it dissolves
7. 7.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
9. 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cotton wool (c) two clear glasses (d) a clock or timer
11. 11.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the water turns solid (d) the sugar turns to salt
12. 12.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) slower (d) not at all
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) cold water (d) a balloon
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
17. 17.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) a comb (c) a mirror (d) a balloon
18. 18.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a teaspoon (c) a magnet (d) sugar
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a balloon (d) warm water
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a comb (d) cold water
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.True or false: a comb is needed for the dissolving test. (a) True (b) False
23. 23.🛟 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
24. 24.⚖️ 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 amount of water (d) time to dissolve
25. 25.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) let the water evaporate (d) stir it more
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) table salt (b) sugar (c) glucose powder (d) sand
28. 28.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) chalk powder (d) food colour
29. 29.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) sawdust (d) sand
32. 32.True or false: sugar stirred well dissolves faster. (a) False (b) True
33. 33.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
34. 34.True or false: food colour dissolves in water. (a) True (b) False
35. 35.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) sugar (c) two clear glasses (d) warm water
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
38. 38.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a rainbow (d) a magnet
39. 39.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True

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