Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 630 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) warm water (d) a teaspoon
2. 2.🔮 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) all of it dissolves (c) the water turns solid (d) some stays undissolved
3. 3.True or false: baking soda dissolves in water. (a) True (b) False
4. 4.True or false: baking soda does not dissolve in water. (a) True (b) False
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a clock or timer (c) cotton wool (d) warm water
7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) sugar left unstirred (d) a big sugar cube
8. 8.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
9. 9.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.True or false: sugar does not dissolve in water. (a) True (b) False
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) honey (d) a teaspoon
12. 12.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
13. 13.True or false: honey is needed for the dissolving test. (a) True (b) False
14. 14.True or false: cooking oil dissolves in water. (a) False (b) True
15. 15.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
16. 16.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) cooking oil (d) glucose powder
17. 17.True or false: a big sugar cube dissolves faster. (a) True (b) False
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
19. 19.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
20. 20.⚖️ 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
21. 21.True or false: sand dissolves in water. (a) False (b) True
22. 22.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) cold water is wet (c) warm water is thicker (d) sugar likes the dark
23. 23.⚖️ 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) the amount of sugar (d) time to dissolve
24. 24.True or false: sugar left unstirred dissolves faster. (a) False (b) True
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) two clear glasses (d) a mirror
29. 29.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
30. 30.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a teaspoon (c) cotton wool (d) a magnet
31. 31.True or false: sugar stirred well dissolves slower. (a) True (b) False
32. 32.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) stir it more (c) add more water (d) keep it in a fridge
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
35. 35.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) a magnet (c) cotton wool (d) a comb
37. 37.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🥄 Which of these dissolves in water? (a) chalk powder (b) glucose powder (c) cooking oil (d) sawdust
39. 39.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.True or false: small pebbles dissolves in water. (a) False (b) True

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