Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 623 · 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: honey is not needed for the dissolving test. (a) False (b) True
2. 2.True or false: a balloon is needed for the dissolving test. (a) False (b) True
3. 3.True or false: a comb is not needed for the dissolving test. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) sawdust
5. 5.🥄 Which of these does not dissolve in water? (a) food colour (b) sand (c) sugar (d) table salt
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a clock or timer (c) sugar (d) cold water
7. 7.True or false: sand dissolves in water. (a) True (b) False
8. 8.True or false: sugar left unstirred dissolves faster. (a) True (b) False
9. 9.🥄 Which of these dissolves in water? (a) baking soda (b) sawdust (c) chalk powder (d) small pebbles
10. 10.⚖️ 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 water temperature (c) the kind of sugar
11. 11.🥄 Which of these dissolves slower? (a) powdered sugar (b) a big sugar cube (c) sugar stirred well (d) sugar in warm water
12. 12.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar stirred well (d) sugar in warm water
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the water temperature (d) the stirring
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) cooking oil (d) sand
16. 16.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) sugar (d) small pebbles
17. 17.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) powdered sugar (c) neither of them (d) the sugar cube
18. 18.True or false: a big sugar cube dissolves slower. (a) False (b) True
19. 19.True or false: table salt dissolves in water. (a) False (b) True
20. 20.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
21. 21.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it settles at the bottom (d) it floats up
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
23. 23.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) cotton wool (d) warm water
26. 26.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a clock or timer (c) a teaspoon (d) two clear glasses
28. 28.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a clock or timer (c) a teaspoon (d) a magnet
30. 30.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) sugar left unstirred
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? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.True or false: sugar is not needed for the dissolving test. (a) True (b) False
34. 34.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
35. 35.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it vanished for ever (d) it spread in the water
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the stirring (d) the amount of sugar
38. 38.⚖️ 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
39. 39.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) add more water (d) stir it more
40. 40.⚖️ 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

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