Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 47 · 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 dissolves in water? (a) table salt (b) sawdust (c) chalk powder (d) cooking oil
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a balloon (d) a teaspoon
3. 3.🔍 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
4. 4.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) chalk powder
5. 5.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
6. 6.🛟 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
7. 7.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) sugar (c) a comb (d) a mirror
8. 8.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
9. 9.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) table salt (d) sawdust
10. 10.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it sank as sand (c) it became air (d) it spread in the water
11. 11.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar stirred well
12. 12.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) some stays undissolved (d) the sugar turns to salt
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) two clear glasses (c) sugar (d) warm water
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) a teaspoon (d) a mirror
17. 17.True or false: sugar dissolves in water. (a) True (b) False
18. 18.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
19. 19.True or false: powdered sugar dissolves faster. (a) False (b) True
20. 20.True or false: sugar left unstirred dissolves faster. (a) True (b) False
21. 21.True or false: powdered sugar dissolves slower. (a) False (b) True
22. 22.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
23. 23.True or false: cold water is not needed for the dissolving test. (a) True (b) False
24. 24.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) a big sugar cube (d) sugar in warm water
26. 26.⚖️ 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
27. 27.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
28. 28.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
29. 29.⚖️ 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) time to dissolve (c) the amount of water (d) the water temperature
30. 30.🥄 Which of these does not dissolve in water? (a) table salt (b) sand (c) baking soda (d) sugar
31. 31.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
32. 32.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) cold water is wet (d) warm water is thicker
33. 33.True or false: sugar does not dissolve in water. (a) True (b) False
34. 34.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) sugar (c) a comb (d) warm water
35. 35.⚖️ 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 stirring
36. 36.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
37. 37.🥄 Which of these dissolves slower? (a) sugar in icy water (b) powdered sugar (c) sugar stirred well (d) sugar in warm water
38. 38.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
39. 39.🥄 Which of these dissolves faster? (a) sugar in warm water (b) a big sugar cube (c) sugar left unstirred (d) sugar in icy water
40. 40.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water

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