Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 360 · 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 glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) all of it dissolves (d) some stays undissolved
3. 3.🔍 Which is the odd one out? (a) sand (b) food colour (c) cooking oil (d) small pebbles
4. 4.⚖️ 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
5. 5.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
6. 6.🥄 Which of these dissolves in water? (a) sawdust (b) glucose powder (c) small pebbles (d) sand
7. 7.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it floats up (d) it settles at the bottom
8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a teaspoon (d) cotton wool
9. 9.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) look for leftover grains (d) taste it
10. 10.True or false: cold water is not needed for the dissolving test. (a) True (b) False
11. 11.True or false: a magnet is needed for the dissolving test. (a) False (b) True
12. 12.True or false: sugar stirred well dissolves slower. (a) True (b) False
13. 13.True or false: sugar in icy water dissolves faster. (a) True (b) False
14. 14.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) warm water (c) sugar (d) two clear glasses
16. 16.True or false: small pebbles dissolves in water. (a) True (b) False
17. 17.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
18. 18.True or false: a comb is not needed for the dissolving test. (a) True (b) False
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) two clear glasses (c) a teaspoon (d) a clock or timer
20. 20.True or false: sawdust dissolves in water. (a) False (b) True
21. 21.🔮 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
22. 22.True or false: powdered sugar dissolves slower. (a) True (b) False
23. 23.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) let the water evaporate (d) keep it in a fridge
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the water temperature (c) the amount of sugar (d) the kind of sugar
25. 25.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
27. 27.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) warm water (c) cold water (d) a teaspoon
32. 32.True or false: sugar stirred well dissolves faster. (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 kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
35. 35.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
36. 36.⚖️ 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 measure it (c) we change it
37. 37.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in warm water (c) sugar in icy water (d) sugar left unstirred
38. 38.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
39. 39.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
40. 40.True or false: food colour dissolves in water. (a) True (b) False

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