Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 407 · 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) sugar (c) food colour (d) small pebbles
2. 2.True or false: a comb is needed for the dissolving test. (a) False (b) True
3. 3.🔮 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
4. 4.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it dissolves (d) it settles at the bottom
5. 5.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) let the water evaporate (d) stir it more
6. 6.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
7. 7.True or false: sand does not dissolve in water. (a) False (b) True
8. 8.⚖️ 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 water temperature (c) the amount of sugar (d) the amount of water
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) sugar (b) food colour (c) cooking oil (d) glucose powder
13. 13.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) slower (d) not at all
14. 14.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a clock or timer (c) sugar (d) a comb
16. 16.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sand (d) food colour
17. 17.🥄 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) table salt (d) cooking oil
18. 18.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) sugar (c) a clock or timer (d) a balloon
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) a clock or timer (d) a magnet
20. 20.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
21. 21.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.⚖️ 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
23. 23.True or false: a comb is not needed for the dissolving test. (a) False (b) True
24. 24.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a magnet (c) a crystal (d) a solution
25. 25.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) food colour
26. 26.True or false: a balloon is needed for the dissolving test. (a) False (b) True
27. 27.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) cotton wool (c) two clear glasses (d) a teaspoon
29. 29.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.⚖️ 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
31. 31.True or false: cold water is needed for the dissolving test. (a) True (b) False
32. 32.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
33. 33.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.True or false: baking soda does not dissolve in water. (a) False (b) True
36. 36.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
37. 37.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
38. 38.🛟 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
39. 39.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) warm water (c) a mirror (d) sugar
40. 40.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) small pebbles (d) sawdust

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