Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 757 · 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.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) a big sugar cube (d) powdered sugar
2. 2.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
3. 3.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the stirring (c) time to dissolve (d) the amount of sugar
5. 5.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) honey (d) cold water
7. 7.🥄 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) food colour (d) glucose powder
8. 8.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
9. 9.True or false: table salt does not dissolve in water. (a) False (b) True
10. 10.True or false: sugar dissolves in water. (a) True (b) False
11. 11.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
12. 12.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
13. 13.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
14. 14.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water
15. 15.True or false: a magnet is needed for the dissolving test. (a) True (b) False
16. 16.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
18. 18.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) add more water (d) stir it more
19. 19.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) all of it dissolves (d) some stays undissolved
20. 20.🔍 Which is the odd one out? (a) food colour (b) sand (c) small pebbles (d) chalk powder
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) a comb (d) a teaspoon
22. 22.🛟 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
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 water
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) two clear glasses (c) a clock or timer (d) a teaspoon
25. 25.True or false: cold water is not needed for the dissolving test. (a) True (b) False
26. 26.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
27. 27.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
28. 28.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: a big sugar cube dissolves faster. (a) True (b) False
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🥄 Which of these dissolves in water? (a) sand (b) sawdust (c) glucose powder (d) cooking oil
32. 32.🥄 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sawdust (d) table salt
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) a balloon (d) warm water
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
36. 36.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cold water (c) a balloon (d) a teaspoon
37. 37.🥄 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) small pebbles (d) baking soda
38. 38.True or false: sugar stirred well dissolves slower. (a) False (b) True
39. 39.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) powdered sugar
40. 40.⚖️ 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

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