Dissolving Experiment Worksheet: Warm and Cold Water

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

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