Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 90 · 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: cooking oil does not dissolve in water. (a) False (b) True
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) warm water (c) two clear glasses (d) cold water
3. 3.True or false: table salt dissolves in water. (a) False (b) True
4. 4.🛟 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
5. 5.⚖️ 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
6. 6.🔍 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
7. 7.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) food colour (d) chalk powder
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) time to dissolve (c) the amount of sugar (d) the kind of sugar
10. 10.⚖️ 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) False (b) True
11. 11.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) baking soda (d) small pebbles
12. 12.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in icy water (d) sugar in warm water
15. 15.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
16. 16.🔮 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 water turns solid (c) some stays undissolved (d) the sugar turns to salt
17. 17.True or false: sugar in warm water dissolves faster. (a) False (b) True
18. 18.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) two clear glasses (d) a balloon
20. 20.⚖️ 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 sugar (b) the kind of sugar (c) the water temperature (d) the stirring
21. 21.True or false: cold water is needed for the dissolving test. (a) False (b) True
22. 22.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) slower (d) not at all
24. 24.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
25. 25.True or false: sand does not dissolve in water. (a) False (b) True
26. 26.True or false: cooking oil dissolves in water. (a) True (b) False
27. 27.True or false: sugar is not needed for the dissolving test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) baking soda (b) sand (c) glucose powder (d) table salt
29. 29.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) warm water (d) cotton wool
30. 30.⚖️ 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 change it (c) we measure it
31. 31.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) cooking oil (d) sawdust
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? True or false: the water temperature is the one thing we change. (a) False (b) True
34. 34.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cotton wool (c) a clock or timer (d) sugar
36. 36.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it spread in the water (d) it sank as sand
37. 37.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
38. 38.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
39. 39.True or false: sugar left unstirred dissolves slower. (a) False (b) True
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True

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