Dissolving Experiment Worksheet: Warm and Cold Water

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

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