Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 174 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) all of it dissolves (d) the water turns solid
2. 2.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar left unstirred (d) powdered sugar
3. 3.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) the same (d) faster
4. 4.🥄 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) sugar (d) food colour
5. 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a magnet (c) two clear glasses (d) a teaspoon
6. 6.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) powdered sugar
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: honey is not needed for the dissolving test. (a) False (b) True
9. 9.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) add more water (d) keep it in a fridge
10. 10.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
11. 11.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: small pebbles does not dissolve in water. (a) False (b) True
15. 15.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a mirror (c) two clear glasses (d) cold water
17. 17.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) food colour (d) small pebbles
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) time to dissolve (c) the stirring (d) the amount of water
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) warm water (c) a mirror (d) a teaspoon
22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) cooking oil (d) sugar
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a clock or timer (c) a balloon (d) a teaspoon
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) a comb (d) two clear glasses
25. 25.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) cotton wool (d) a teaspoon
26. 26.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) warm water (d) honey
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
28. 28.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a clock or timer (d) a balloon
31. 31.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
32. 32.🥄 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) sugar (d) sand
33. 33.True or false: chalk powder dissolves in water. (a) True (b) False
34. 34.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
35. 35.True or false: sugar does not dissolve in water. (a) True (b) False
36. 36.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
37. 37.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
38. 38.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
39. 39.🔮 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
40. 40.True or false: powdered sugar dissolves slower. (a) True (b) False

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