Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 221 · 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) sand (b) small pebbles (c) cooking oil (d) glucose powder
2. 2.True or false: cooking oil does not dissolve in water. (a) False (b) True
3. 3.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) two clear glasses (d) a clock or timer
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
6. 6.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) powdered sugar (d) sugar left unstirred
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
9. 9.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it floats up (c) it dissolves (d) it turns blue
10. 10.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water
11. 11.True or false: sugar in icy water dissolves slower. (a) True (b) False
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) a clock or timer (d) honey
14. 14.🥄 Which of these does not dissolve in water? (a) chalk powder (b) food colour (c) baking soda (d) sugar
15. 15.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
16. 16.🥄 Which of these does not dissolve in water? (a) baking soda (b) sand (c) table salt (d) glucose powder
17. 17.⚖️ 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 stirring (d) the amount of sugar
18. 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a comb (c) a clock or timer (d) warm water
19. 19.True or false: sugar is needed for the dissolving test. (a) False (b) True
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) honey (c) cold water (d) a teaspoon
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the dissolving test? (a) honey (b) a teaspoon (c) a clock or timer (d) sugar
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
24. 24.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
27. 27.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
28. 28.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
29. 29.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
30. 30.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar left unstirred (d) sugar in warm water
31. 31.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
33. 33.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🥄 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) glucose powder (d) cooking oil
36. 36.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) food colour (d) sawdust
37. 37.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a teaspoon (c) honey (d) a mirror
39. 39.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the dissolving test? (a) a comb (b) cotton wool (c) cold water (d) a mirror

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