Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 518 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the kind of sugar (c) the amount of sugar (d) the water temperature
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) a magnet (d) a clock or timer
3. 3.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
4. 4.⚖️ 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
5. 5.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) sugar left unstirred (d) a big sugar cube
6. 6.True or false: table salt does not dissolve in water. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) table salt (d) sand
8. 8.🔍 Which is the odd one out? (a) sugar (b) sand (c) glucose powder (d) food colour
9. 9.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.True or false: sugar in warm water dissolves slower. (a) False (b) True
12. 12.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) powdered sugar (d) neither of them
13. 13.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🥄 Which of these dissolves in water? (a) cooking oil (b) food colour (c) chalk powder (d) small pebbles
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
19. 19.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) let the water evaporate (d) add more water
20. 20.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
21. 21.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
22. 22.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
23. 23.True or false: sawdust dissolves in water. (a) False (b) True
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) sugar (d) a mirror
26. 26.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
27. 27.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) food colour (b) sugar (c) baking soda (d) chalk powder
29. 29.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
30. 30.🥄 Which of these dissolves in water? (a) sand (b) cooking oil (c) chalk powder (d) table salt
31. 31.True or false: small pebbles does not dissolve in water. (a) True (b) False
32. 32.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) sugar
33. 33.🛟 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
34. 34.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
35. 35.True or false: glucose powder dissolves in water. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) food colour (d) cooking oil
37. 37.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a comb (c) cold water (d) a teaspoon
39. 39.True or false: baking soda does not dissolve in water. (a) True (b) False
40. 40.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely

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