Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 871 · 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.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) food colour (d) table salt
2. 2.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
3. 3.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) two clear glasses (c) cold water (d) cotton wool
4. 4.🧺 Which of these is needed for the dissolving test? (a) honey (b) cotton wool (c) a mirror (d) two clear glasses
5. 5.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) particles move faster (d) cold water is wet
6. 6.⚖️ 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
7. 7.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
8. 8.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a mirror (c) cold water (d) a magnet
9. 9.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) taste it (d) poke it with a finger
10. 10.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
12. 12.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it spread in the water (d) it became air
13. 13.True or false: table salt does not dissolve in water. (a) True (b) False
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) two clear glasses (d) a mirror
15. 15.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
16. 16.True or false: baking soda dissolves in water. (a) False (b) True
17. 17.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
18. 18.True or false: glucose powder does not dissolve in water. (a) False (b) True
19. 19.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a magnet (c) a rainbow (d) a crystal
20. 20.True or false: a balloon is needed for the dissolving test. (a) True (b) False
21. 21.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) two clear glasses (c) honey (d) sugar
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the kind of sugar (d) time to dissolve
24. 24.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
25. 25.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
26. 26.True or false: chalk powder dissolves in water. (a) True (b) False
27. 27.🥄 Which of these dissolves in water? (a) sawdust (b) sand (c) sugar (d) cooking oil
28. 28.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
30. 30.True or false: warm water is not needed for the dissolving test. (a) False (b) True
31. 31.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cotton wool (c) a teaspoon (d) cold water
33. 33.🔍 Which is the odd one out? (a) table salt (b) food colour (c) small pebbles (d) sugar
34. 34.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
35. 35.True or false: sugar stirred well dissolves faster. (a) True (b) False
36. 36.⚖️ 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
37. 37.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
38. 38.⚖️ 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
39. 39.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) both the same (d) powdered sugar
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it

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