Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 710 · 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: glucose powder dissolves in water. (a) False (b) True
2. 2.🥄 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) small pebbles (d) table salt
3. 3.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a crystal (c) a magnet (d) a solution
4. 4.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
5. 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) a clock or timer (d) a mirror
6. 6.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
7. 7.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it spread in the water (d) it sank as sand
8. 8.True or false: sand dissolves in water. (a) False (b) True
9. 9.⚖️ 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
10. 10.⚖️ 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 measure it (c) we keep it the same
11. 11.True or false: cooking oil dissolves in water. (a) False (b) True
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a teaspoon (c) two clear glasses (d) honey
13. 13.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
14. 14.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) let the water evaporate (d) stir it more
15. 15.🥄 Which of these dissolves in water? (a) chalk powder (b) food colour (c) small pebbles (d) cooking oil
16. 16.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
17. 17.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
18. 18.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar in icy water (d) sugar left unstirred
19. 19.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
20. 20.🧺 Which of these is not needed for the dissolving test? (a) honey (b) a clock or timer (c) a teaspoon (d) two clear glasses
21. 21.True or false: small pebbles does not dissolve in water. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) sawdust (d) sand
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a teaspoon (c) sugar (d) a magnet
24. 24.⚖️ 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 amount of water (c) the water temperature (d) the kind of sugar
25. 25.⚖️ 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) the amount of water (c) time to dissolve
26. 26.🛟 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
27. 27.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) sand (d) small pebbles
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) warm water (d) a balloon
29. 29.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) food colour (d) small pebbles
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
32. 32.True or false: sugar stirred well dissolves faster. (a) True (b) False
33. 33.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
34. 34.⚖️ 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 measure it (c) we change it
35. 35.⚖️ 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
36. 36.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
37. 37.⚖️ 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) True (b) False
38. 38.True or false: sugar in warm water dissolves slower. (a) False (b) True
39. 39.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it floats up (d) it dissolves
40. 40.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve

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