Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 165 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) small pebbles (d) sawdust
3. 3.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the sugar turns to salt (d) the water turns solid
4. 4.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sand (d) baking soda
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
7. 7.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it dissolves (d) it floats up
8. 8.🥄 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) cooking oil (d) glucose 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 stirring (b) the water temperature (c) the kind of sugar (d) time to dissolve
10. 10.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
11. 11.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
12. 12.True or false: sawdust dissolves in water. (a) True (b) False
13. 13.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
14. 14.⚖️ 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 water (b) time to dissolve (c) the water temperature (d) the amount of sugar
15. 15.⚖️ 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
16. 16.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) food colour
17. 17.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
18. 18.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar left unstirred (d) powdered sugar
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) time to dissolve (c) the water temperature
20. 20.⚖️ 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
21. 21.True or false: sugar in icy water dissolves faster. (a) True (b) False
22. 22.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
23. 23.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
24. 24.True or false: table salt does not dissolve in water. (a) False (b) True
25. 25.True or false: a big sugar cube dissolves slower. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) small pebbles (d) glucose powder
27. 27.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
28. 28.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) honey (c) warm water (d) a clock or timer
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) a comb (d) cold water
32. 32.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
33. 33.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) keep it in a fridge (d) let the water evaporate
35. 35.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
36. 36.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) cooking oil (d) glucose powder
37. 37.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) cotton wool (d) cold water
39. 39.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
40. 40.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster

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