Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 731 · 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 kept the same? (a) time to dissolve (b) the water temperature (c) the amount of sugar
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a clock or timer (c) a teaspoon (d) a magnet
3. 3.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.True or false: warm water is needed for the dissolving test. (a) True (b) False
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) a teaspoon (d) a mirror
7. 7.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a magnet (d) a clock or timer
8. 8.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) add more water (d) stir it more
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
13. 13.⚖️ 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 amount of water (c) the stirring (d) the water temperature
14. 14.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
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.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
17. 17.True or false: small pebbles dissolves in water. (a) True (b) False
18. 18.True or false: sugar in icy water dissolves slower. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) small pebbles (d) baking soda
20. 20.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sawdust (d) glucose powder
21. 21.True or false: sugar in warm water dissolves slower. (a) True (b) False
22. 22.True or false: powdered sugar dissolves faster. (a) True (b) False
23. 23.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
24. 24.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it spread in the water (d) it became air
25. 25.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it floats up (d) it dissolves
26. 26.True or false: sugar in icy water dissolves faster. (a) False (b) True
27. 27.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
29. 29.True or false: honey is not needed for the dissolving test. (a) True (b) False
30. 30.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
31. 31.⚖️ 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 amount of water (c) the water temperature
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a teaspoon (d) a comb
33. 33.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
34. 34.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) taste it (d) smell it closely
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the water temperature (c) the kind of sugar (d) the amount of water
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.True or false: baking soda dissolves in water. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) cooking oil (d) food colour
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
40. 40.True or false: a big sugar cube dissolves faster. (a) False (b) True

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