Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 688 · 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 a big sugar cube dissolve faster or slower? (a) faster (b) slower
2. 2.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) stir it more (d) let the water evaporate
3. 3.True or false: sugar left unstirred dissolves slower. (a) False (b) True
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) sand (d) sawdust
6. 6.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) the sugar turns to salt (d) all of it dissolves
7. 7.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sand (d) food colour
9. 9.True or false: honey is needed for the dissolving test. (a) False (b) True
10. 10.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) a big sugar cube (d) sugar left unstirred
11. 11.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
13. 13.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
14. 14.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a comb (c) sugar (d) two clear glasses
15. 15.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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 amount of water
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cotton wool (c) cold water (d) warm water
20. 20.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) table salt (d) food colour
21. 21.True or false: baking soda does not dissolve in water. (a) True (b) False
22. 22.True or false: chalk powder dissolves in water. (a) True (b) False
23. 23.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) food colour (d) sawdust
24. 24.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a comb (c) two clear glasses (d) a clock or timer
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
28. 28.True or false: sawdust dissolves in water. (a) True (b) False
29. 29.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it became air (d) it vanished for ever
30. 30.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a teaspoon (c) a balloon (d) two clear glasses
31. 31.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
32. 32.True or false: cooking oil dissolves in water. (a) False (b) True
33. 33.⚖️ 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 amount of sugar (c) the water temperature (d) time to dissolve
34. 34.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a teaspoon (d) a mirror
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the stirring (c) the water temperature (d) the amount of sugar
37. 37.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.True or false: a magnet is needed for the dissolving test. (a) False (b) True

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