Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 667 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it settles at the bottom (d) it turns blue
2. 2.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.True or false: warm water is not needed for the dissolving test. (a) True (b) False
4. 4.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) stir it more (c) keep it in a fridge (d) add more water
6. 6.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) sugar (d) cotton wool
8. 8.⚖️ 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) the amount of water (c) time to dissolve (d) the water temperature
9. 9.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) sawdust (d) baking soda
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) cold water (d) honey
11. 11.⚖️ 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 change it (c) we measure it
12. 12.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) all of it dissolves (d) the sugar turns to salt
13. 13.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) slower (d) the same
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) sugar (d) a mirror
15. 15.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a magnet (c) cold water (d) a balloon
16. 16.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) warm water (d) cotton wool
17. 17.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
18. 18.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) neither of them (d) both the same
19. 19.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
20. 20.🥄 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
21. 21.🥄 Which of these dissolves in water? (a) small pebbles (b) sand (c) sawdust (d) baking soda
22. 22.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) powdered sugar (c) sugar stirred well (d) sugar in warm water
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
24. 24.True or false: cooking oil dissolves in water. (a) False (b) True
25. 25.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
27. 27.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
28. 28.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
29. 29.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) sugar (c) a mirror (d) a comb
30. 30.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) warm water (d) a comb
31. 31.True or false: chalk powder dissolves in water. (a) True (b) False
32. 32.⚖️ 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 water temperature (d) the stirring
33. 33.True or false: powdered sugar dissolves faster. (a) False (b) True
34. 34.🥄 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) food colour (d) baking soda
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
36. 36.⚖️ 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) time to dissolve (c) the amount of water
37. 37.True or false: a mirror is needed for the dissolving test. (a) True (b) False
38. 38.True or false: sand does not dissolve in water. (a) False (b) True
39. 39.True or false: a balloon is needed for the dissolving test. (a) True (b) False
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False

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