Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 604 · 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.True or false: a magnet is needed for the dissolving test. (a) False (b) True
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it spread in the water (c) it sank as sand (d) it vanished for ever
4. 4.⚖️ 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 amount of sugar (c) the water temperature
5. 5.🛟 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
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the amount of water (c) the amount of sugar (d) the water temperature
7. 7.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🥄 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) cooking oil
9. 9.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
10. 10.True or false: sugar is not needed for the dissolving test. (a) True (b) False
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the kind of sugar (c) time to dissolve
13. 13.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
14. 14.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
15. 15.True or false: sugar is needed for the dissolving test. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sugar (d) sand
17. 17.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
21. 21.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar in warm water
22. 22.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
23. 23.🔮 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) all of it dissolves (d) the sugar turns to salt
24. 24.🥄 Which of these does not dissolve in water? (a) sugar (b) cooking oil (c) baking soda (d) table salt
25. 25.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
26. 26.🥄 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) sawdust (d) sand
27. 27.True or false: cooking oil dissolves in water. (a) True (b) False
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) a magnet (d) warm water
29. 29.🥄 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) chalk powder (d) sugar
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a comb (c) a teaspoon (d) cold water
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) warm water (d) cotton wool
32. 32.🥄 Which of these dissolves in water? (a) baking soda (b) sand (c) small pebbles (d) cooking oil
33. 33.True or false: table salt does not dissolve in water. (a) True (b) False
34. 34.True or false: a comb is not needed for the dissolving test. (a) False (b) True
35. 35.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a comb (c) honey (d) a balloon
36. 36.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
37. 37.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
38. 38.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) two clear glasses (d) cotton wool
39. 39.True or false: sand does not dissolve in water. (a) False (b) True
40. 40.🔮 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

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