Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 311 · 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.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
2. 2.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.True or false: food colour does not dissolve in water. (a) False (b) True
4. 4.True or false: sugar is needed for the dissolving test. (a) False (b) True
5. 5.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
6. 6.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
7. 7.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
8. 8.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) sugar (c) a magnet (d) a balloon
9. 9.⚖️ 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 stirring (c) the amount of water (d) the kind of sugar
10. 10.🛟 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
11. 11.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it settles at the bottom (c) it turns blue (d) it floats up
12. 12.True or false: sand does not dissolve in water. (a) False (b) True
13. 13.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) keep it in a fridge (d) let the water evaporate
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Which of these is needed for the dissolving test? (a) honey (b) cotton wool (c) a mirror (d) a clock or timer
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
17. 17.🔮 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) the sugar turns to salt (d) all of it dissolves
18. 18.True or false: a comb is needed for the dissolving test. (a) True (b) False
19. 19.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) honey (c) warm water (d) a teaspoon
21. 21.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
22. 22.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) warm water is thicker (c) cold water is wet (d) sugar likes the dark
23. 23.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) food colour (b) sand (c) baking soda (d) table salt
27. 27.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in warm water (c) sugar in icy water (d) a big sugar cube
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) cold water (d) a mirror
29. 29.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
30. 30.True or false: sugar does not dissolve in water. (a) True (b) False
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.True or false: a big sugar cube dissolves faster. (a) True (b) False
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) a magnet (d) warm water
34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) a balloon (d) two clear glasses
35. 35.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar in icy water (d) powdered sugar
36. 36.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) sand (d) small pebbles
37. 37.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all
38. 38.True or false: a big sugar cube dissolves slower. (a) False (b) True
39. 39.True or false: cold water is needed for the dissolving test. (a) True (b) False
40. 40.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve

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