Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 692 · 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.True or false: honey is not needed for the dissolving test. (a) True (b) False
2. 2.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in warm water (c) sugar in icy water (d) a big sugar cube
3. 3.🥄 Which of these dissolves in water? (a) sand (b) baking soda (c) chalk powder (d) small pebbles
4. 4.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
5. 5.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) neither of them (d) the sugar cube
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a comb (c) warm water (d) a teaspoon
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
9. 9.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.⚖️ 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
12. 12.True or false: cold water is needed for the dissolving test. (a) True (b) False
13. 13.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
14. 14.True or false: baking soda does not dissolve in water. (a) False (b) True
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) warm water (c) two clear glasses (d) a clock or timer
16. 16.🥄 Which of these does not dissolve in water? (a) baking soda (b) sand (c) table salt (d) sugar
17. 17.True or false: a big sugar cube dissolves faster. (a) False (b) True
18. 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) a mirror (d) a teaspoon
19. 19.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a magnet (c) a teaspoon (d) a balloon
20. 20.True or false: warm water is needed for the dissolving test. (a) False (b) True
21. 21.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) poke it with a finger (d) taste it
22. 22.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar left unstirred (d) sugar in warm water
23. 23.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar stirred well (d) sugar in icy water
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) a clock or timer (d) cold water
25. 25.True or false: food colour dissolves in water. (a) False (b) True
26. 26.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
27. 27.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
28. 28.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🔍 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
32. 32.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
33. 33.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
34. 34.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) two clear glasses (c) honey (d) a balloon
36. 36.🥄 Which of these dissolves slower? (a) sugar in icy water (b) powdered sugar (c) sugar stirred well (d) sugar in warm water
37. 37.True or false: small pebbles dissolves in water. (a) True (b) False
38. 38.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
39. 39.🔮 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
40. 40.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed

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