Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 433 · 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 table salt dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
4. 4.🧺 Which of these is needed for the dissolving test? (a) a comb (b) warm water (c) a balloon (d) a mirror
5. 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a clock or timer (c) warm water (d) a teaspoon
6. 6.True or false: sugar stirred well dissolves faster. (a) True (b) False
7. 7.🥄 Which of these dissolves in water? (a) sand (b) sugar (c) chalk powder (d) cooking oil
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.True or false: a balloon is needed for the dissolving test. (a) True (b) False
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) a comb (d) sugar
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) two clear glasses (d) a clock or timer
13. 13.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
14. 14.⚖️ 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
15. 15.🥄 Which of these does not dissolve in water? (a) baking soda (b) sand (c) food colour (d) glucose powder
16. 16.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it vanished for ever (d) it became air
17. 17.True or false: sand dissolves in water. (a) False (b) True
18. 18.True or false: cold water is not needed for the dissolving test. (a) False (b) True
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a mirror (c) sugar (d) a magnet
21. 21.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
22. 22.True or false: sugar in icy water dissolves faster. (a) False (b) True
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) slower (d) not at all
24. 24.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
25. 25.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the stirring
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the stirring (d) the amount of water
28. 28.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
29. 29.🔮 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 sugar turns to salt (c) the water turns solid (d) some stays undissolved
30. 30.True or false: table salt dissolves in water. (a) False (b) True
31. 31.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cold water (c) a comb (d) honey
32. 32.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) glucose powder (d) table salt
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) True (b) False
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
37. 37.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) keep it in a fridge (d) stir it more
38. 38.🥄 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) baking soda (d) glucose powder
39. 39.🥄 Which of these dissolves in water? (a) sand (b) table salt (c) small pebbles (d) sawdust
40. 40.⚖️ 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

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