Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 423 · 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 is the odd one out? (a) sand (b) sawdust (c) cooking oil (d) food colour
2. 2.True or false: sugar is needed for the dissolving test. (a) True (b) False
3. 3.⚖️ 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
4. 4.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
5. 5.⚖️ 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) True (b) False
6. 6.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.⚖️ 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
8. 8.True or false: powdered sugar dissolves faster. (a) True (b) False
9. 9.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) table salt (d) sawdust
10. 10.True or false: food colour dissolves in water. (a) True (b) False
11. 11.🥄 Which of these dissolves in water? (a) small pebbles (b) sand (c) food colour (d) cooking oil
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the amount of water (d) the water temperature
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) warm water (c) sugar (d) two clear glasses
14. 14.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
15. 15.True or false: a mirror is needed for the dissolving test. (a) False (b) True
16. 16.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
17. 17.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
18. 18.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it became air (d) it spread in the water
19. 19.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) sand (d) small pebbles
20. 20.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) let the water evaporate (d) keep it in a fridge
21. 21.🔍 Which is the odd one out? (a) sand (b) sawdust (c) baking soda (d) small pebbles
22. 22.True or false: sugar in warm water dissolves faster. (a) True (b) False
23. 23.True or false: chalk powder does not dissolve in water. (a) True (b) False
24. 24.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
25. 25.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it dissolves (c) it turns blue (d) it floats up
26. 26.True or false: table salt dissolves in water. (a) True (b) False
27. 27.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a magnet (d) a crystal
28. 28.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) a balloon (d) two clear glasses
32. 32.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
34. 34.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
35. 35.True or false: honey is not needed for the dissolving test. (a) False (b) True
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) a mirror (d) two clear glasses
38. 38.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sawdust (d) baking soda
40. 40.True or false: sugar in icy water dissolves faster. (a) True (b) False

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