Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 178 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
2. 2.True or false: glucose powder dissolves in water. (a) False (b) True
3. 3.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a magnet (c) a solution (d) a crystal
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a clock or timer (c) a teaspoon (d) cold water
5. 5.🔍 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
6. 6.⚖️ 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
7. 7.True or false: warm water is not needed for the dissolving test. (a) True (b) False
8. 8.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a clock or timer (c) a balloon (d) cold water
9. 9.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.True or false: sugar left unstirred dissolves faster. (a) True (b) False
12. 12.True or false: sugar stirred well dissolves slower. (a) True (b) False
13. 13.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
14. 14.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
15. 15.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
16. 16.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
18. 18.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it turns blue (c) it floats up (d) it settles at the bottom
19. 19.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it vanished for ever (d) it sank as sand
21. 21.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.True or false: cold water is not needed for the dissolving test. (a) False (b) True
23. 23.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
24. 24.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.True or false: a mirror is needed for the dissolving test. (a) False (b) True
27. 27.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) powdered sugar (d) sugar in warm water
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) the stirring (c) time to dissolve (d) the water temperature
29. 29.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
30. 30.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
31. 31.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
33. 33.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) baking soda (d) sawdust
34. 34.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
35. 35.🥄 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) chalk powder (d) table salt
36. 36.⚖️ 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) False (b) True
37. 37.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar in warm water (d) sugar left unstirred
38. 38.True or false: a big sugar cube dissolves faster. (a) True (b) False
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a teaspoon (d) a comb
40. 40.⚖️ 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 measure it (c) we keep it the same

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