Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 240 · 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.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔍 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
3. 3.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) small pebbles (d) cooking oil
4. 4.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
5. 5.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
6. 6.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) two clear glasses (d) cotton wool
7. 7.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a balloon (c) warm water (d) a teaspoon
8. 8.True or false: sugar is not needed for the dissolving test. (a) True (b) False
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) a clock or timer (c) a teaspoon (d) cold water
10. 10.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
13. 13.⚖️ 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 sugar (b) the amount of water (c) the stirring (d) the water temperature
14. 14.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.True or false: small pebbles does not dissolve in water. (a) True (b) False
16. 16.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.True or false: sawdust dissolves in water. (a) False (b) True
20. 20.True or false: sugar does not dissolve in water. (a) False (b) True
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) sugar (d) cotton wool
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.⚖️ 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 amount of sugar
24. 24.🛟 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
25. 25.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sawdust (d) chalk powder
26. 26.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
27. 27.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) sugar likes the dark (d) cold water is wet
28. 28.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) warm water (d) cotton wool
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
30. 30.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) table salt
31. 31.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) powdered sugar
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) sugar (d) a magnet
33. 33.🥄 Which of these dissolves in water? (a) small pebbles (b) sand (c) food colour (d) sawdust
34. 34.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it sank as sand (d) it became air
35. 35.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) a comb (d) a teaspoon
36. 36.🥄 Which of these does not dissolve in water? (a) food colour (b) table salt (c) glucose powder (d) small pebbles
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.⚖️ 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
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) sawdust (d) sugar

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