Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 945 · 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.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
2. 2.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
3. 3.True or false: sugar is not needed for the dissolving test. (a) True (b) False
4. 4.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
5. 5.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) a comb (d) warm water
6. 6.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) add more water (d) stir it more
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
8. 8.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a balloon (c) a magnet (d) a comb
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) a teaspoon (d) a magnet
11. 11.True or false: glucose powder does not dissolve in water. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.🔮 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) the sugar turns to salt (d) some stays undissolved
14. 14.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
15. 15.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
17. 17.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) two clear glasses (c) a balloon (d) a mirror
21. 21.True or false: sugar stirred well dissolves faster. (a) True (b) False
22. 22.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
24. 24.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.⚖️ 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 stirring (c) time to dissolve
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) False (b) True
28. 28.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) a big sugar cube
29. 29.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) cooking oil (d) sawdust
30. 30.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
31. 31.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
32. 32.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) False (b) True
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) warm water is thicker (d) cold water is wet
36. 36.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a balloon (c) a teaspoon (d) warm water
39. 39.True or false: sawdust dissolves in water. (a) False (b) True
40. 40.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all

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