Dissolving Experiment Worksheet: Warm and Cold Water

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

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