Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 420 · 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.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) add more water (d) let the water evaporate
2. 2.True or false: warm water is needed for the dissolving test. (a) True (b) False
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sawdust (d) table salt
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the kind of sugar (c) the amount of water (d) the water temperature
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) food colour (d) small pebbles
7. 7.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a comb (c) honey (d) warm water
8. 8.True or false: sugar stirred well dissolves slower. (a) True (b) False
9. 9.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) warm water is thicker (d) cold water is wet
10. 10.True or false: sugar left unstirred dissolves slower. (a) True (b) False
11. 11.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
12. 12.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a balloon (c) sugar (d) a teaspoon
14. 14.True or false: glucose powder dissolves in water. (a) False (b) True
15. 15.True or false: a comb is not needed for the dissolving test. (a) True (b) False
16. 16.⚖️ 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
17. 17.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it sank as sand (c) it became air (d) it vanished for ever
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🔍 Which is the odd one out? (a) sand (b) baking soda (c) glucose powder (d) sugar
20. 20.True or false: sugar stirred well dissolves faster. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) small pebbles (d) sugar
22. 22.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) table salt
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of water (c) the water temperature (d) the amount of sugar
24. 24.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) two clear glasses (d) a mirror
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) time to dissolve (c) the water temperature
27. 27.🛟 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
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
30. 30.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
32. 32.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) cold water (c) warm water (d) two clear glasses
34. 34.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
35. 35.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
36. 36.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) sugar (c) a comb (d) cotton wool
37. 37.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cotton wool (c) a clock or timer (d) sugar
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water

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