Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 907 · 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.🥄 Which of these does not dissolve in water? (a) food colour (b) sand (c) table salt (d) baking soda
2. 2.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
3. 3.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sugar (d) small pebbles
4. 4.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
5. 5.True or false: small pebbles does not dissolve in water. (a) False (b) True
6. 6.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a magnet (d) warm water
7. 7.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) sugar (d) sand
9. 9.True or false: sugar left unstirred dissolves faster. (a) False (b) True
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
11. 11.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
12. 12.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
13. 13.True or false: cooking oil dissolves in water. (a) True (b) False
14. 14.True or false: chalk powder does not dissolve in water. (a) False (b) True
15. 15.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it became air (d) it spread in the water
16. 16.True or false: cold water is not needed for the dissolving test. (a) True (b) False
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the kind of sugar (d) the stirring
18. 18.True or false: sugar in warm water dissolves slower. (a) True (b) False
19. 19.⚖️ 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 stirring (c) time to dissolve (d) the amount of sugar
20. 20.⚖️ 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 amount of sugar (c) time to dissolve
21. 21.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.True or false: sugar does not dissolve in water. (a) False (b) True
23. 23.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cotton wool (c) a clock or timer (d) honey
24. 24.⚖️ 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
25. 25.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
26. 26.🥄 Which of these dissolves faster? (a) powdered sugar (b) a big sugar cube (c) sugar left unstirred (d) sugar in icy water
27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
28. 28.True or false: sugar stirred well dissolves slower. (a) True (b) False
29. 29.True or false: sand dissolves in water. (a) False (b) True
30. 30.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) glucose powder
31. 31.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a magnet (c) a solution (d) a crystal
32. 32.🔍 Which is the odd one out? (a) table salt (b) sand (c) sugar (d) glucose powder
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
34. 34.True or false: sugar dissolves in water. (a) False (b) True
35. 35.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
36. 36.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) chalk powder (d) sand
38. 38.True or false: sugar stirred well dissolves faster. (a) True (b) False
39. 39.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) sugar left unstirred (d) a big sugar cube
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) cold water (d) cotton wool

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