Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 591 · 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.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
2. 2.True or false: a big sugar cube dissolves slower. (a) False (b) True
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a clock or timer (c) warm water (d) two clear glasses
4. 4.True or false: sugar in warm water dissolves slower. (a) False (b) True
5. 5.⚖️ 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
6. 6.🥄 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) food colour (d) sugar
7. 7.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) sugar
8. 8.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
10. 10.True or false: sugar stirred well dissolves slower. (a) True (b) False
11. 11.True or false: baking soda dissolves in water. (a) False (b) True
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.⚖️ 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
14. 14.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a comb (d) sugar
15. 15.⚖️ 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 kind of sugar
16. 16.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
19. 19.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) chalk powder (d) sugar
20. 20.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) sand (b) food colour (c) sawdust (d) small pebbles
22. 22.True or false: sugar left unstirred dissolves faster. (a) False (b) True
23. 23.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
24. 24.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) powdered sugar (d) both the same
25. 25.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
26. 26.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) food colour (d) sand
27. 27.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a mirror (c) warm water (d) cold water
28. 28.True or false: sugar in warm water dissolves faster. (a) True (b) False
29. 29.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) two clear glasses (d) a comb
30. 30.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
31. 31.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) keep it in a fridge (d) add more water
32. 32.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) smell it closely (d) taste it
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: a comb is not needed for the dissolving test. (a) False (b) True
35. 35.True or false: sand does not dissolve in water. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) glucose powder (d) baking soda
37. 37.🧺 Which of these is not needed for the dissolving test? (a) a comb (b) a clock or timer (c) warm water (d) sugar
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) time to dissolve
39. 39.🔍 Which is the odd one out? (a) sugar (b) sand (c) food colour (d) glucose powder
40. 40.True or false: warm water is not needed for the dissolving test. (a) True (b) False

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