Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 728 · 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 dissolves in water? (a) cooking oil (b) sand (c) small pebbles (d) table salt
2. 2.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) some stays undissolved (d) the sugar turns to salt
3. 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
4. 4.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a comb (c) honey (d) warm water
5. 5.True or false: sugar in icy water dissolves slower. (a) True (b) False
6. 6.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar left unstirred (d) sugar in icy water
7. 7.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) cold water (d) a comb
8. 8.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) powdered sugar (d) sugar in warm water
9. 9.⚖️ 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) False (b) True
10. 10.⚖️ 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 amount of water (c) the water temperature (d) the kind of sugar
11. 11.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
12. 12.🧺 Which of these is needed for the dissolving test? (a) honey (b) sugar (c) cotton wool (d) a comb
13. 13.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a comb (c) a teaspoon (d) warm water
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
16. 16.⚖️ 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
17. 17.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
18. 18.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.True or false: sugar dissolves in water. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) table salt (d) sand
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) a clock or timer (d) a comb
22. 22.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
23. 23.⚖️ 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 kind of sugar (c) the water temperature (d) time to dissolve
24. 24.True or false: sugar in warm water dissolves slower. (a) True (b) False
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) warm water (c) two clear glasses (d) sugar
26. 26.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar left unstirred
27. 27.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) food colour (d) sugar
28. 28.🔍 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 became air (d) it spread in the water
29. 29.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) small pebbles (d) baking soda
31. 31.True or false: a comb is needed for the dissolving test. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) small pebbles (d) chalk powder
33. 33.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) table salt (d) food colour
34. 34.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sawdust (d) sand
35. 35.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it dissolves (d) it floats up
36. 36.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
38. 38.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.⚖️ 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
40. 40.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) stir it more (d) keep it in a fridge

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