Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 405 · 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 does not dissolve in water? (a) table salt (b) sawdust (c) food colour (d) glucose powder
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.⚖️ 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 sugar
4. 4.True or false: table salt does not dissolve in water. (a) True (b) False
5. 5.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a rainbow (d) a magnet
6. 6.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
7. 7.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
8. 8.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) baking soda (d) cooking oil
9. 9.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) cooking oil (d) chalk powder
10. 10.True or false: cold water is not needed for the dissolving test. (a) False (b) True
11. 11.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
13. 13.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
14. 14.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
16. 16.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the amount of sugar (c) time to dissolve (d) the water temperature
18. 18.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
19. 19.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a comb (c) a teaspoon (d) sugar
21. 21.⚖️ 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 water temperature (c) the amount of sugar (d) the stirring
22. 22.True or false: sugar in warm water dissolves slower. (a) False (b) True
23. 23.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
24. 24.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) stir it more (d) keep it in a fridge
25. 25.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar in icy water
26. 26.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
27. 27.🧺 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
28. 28.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) poke it with a finger (d) look for leftover grains
29. 29.True or false: sugar dissolves in water. (a) False (b) True
30. 30.⚖️ 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
31. 31.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar in warm water
32. 32.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a teaspoon (c) a comb (d) cold water
33. 33.🥄 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) food colour (d) sugar
34. 34.True or false: cold water is needed for the dissolving test. (a) False (b) True
35. 35.True or false: baking soda does not dissolve in water. (a) False (b) True
36. 36.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
37. 37.True or false: warm water is needed for the dissolving test. (a) False (b) True
38. 38.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
39. 39.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
40. 40.🔮 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

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