Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 159 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cotton wool (c) sugar (d) two clear glasses
2. 2.True or false: sugar stirred well dissolves faster. (a) True (b) False
3. 3.🥄 Which of these dissolves in water? (a) table salt (b) sawdust (c) chalk powder (d) cooking oil
4. 4.True or false: glucose powder does not dissolve in water. (a) False (b) True
5. 5.True or false: baking soda dissolves in water. (a) False (b) True
6. 6.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) sugar (d) honey
7. 7.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sugar (d) cooking oil
8. 8.True or false: cold water is needed for the dissolving test. (a) True (b) False
9. 9.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.True or false: sugar in warm water dissolves slower. (a) True (b) False
11. 11.True or false: food colour dissolves in water. (a) True (b) False
12. 12.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) a clock or timer (c) sugar (d) a teaspoon
13. 13.True or false: sawdust dissolves in water. (a) True (b) False
14. 14.True or false: sugar is needed for the dissolving test. (a) True (b) False
15. 15.⚖️ 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 water temperature (c) time to dissolve (d) the stirring
16. 16.⚖️ 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) the amount of water (c) the amount of sugar (d) time to dissolve
17. 17.True or false: a comb is not needed for the dissolving test. (a) False (b) True
18. 18.True or false: cold water is not needed for the dissolving test. (a) False (b) True
19. 19.🔮 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
20. 20.⚖️ 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
21. 21.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
22. 22.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
23. 23.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) stir it more (d) keep it in a fridge
24. 24.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
25. 25.True or false: sand dissolves in water. (a) False (b) True
26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
27. 27.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
28. 28.True or false: sugar stirred well dissolves slower. (a) False (b) True
29. 29.True or false: cooking oil dissolves in water. (a) False (b) True
30. 30.⚖️ 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
31. 31.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
32. 32.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) a mirror (d) sugar
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
37. 37.True or false: sugar in icy water dissolves slower. (a) True (b) False
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same

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