Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 173 · 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) a teaspoon (b) two clear glasses (c) a comb (d) sugar
2. 2.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
3. 3.🥄 Which of these does not dissolve in water? (a) glucose powder (b) cooking oil (c) sugar (d) baking soda
4. 4.🔮 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) the sugar turns to salt (d) some stays undissolved
5. 5.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a teaspoon (d) a mirror
6. 6.True or false: sugar stirred well dissolves faster. (a) True (b) False
7. 7.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sugar (d) sand
8. 8.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) a magnet (d) cold water
12. 12.🥄 Which of these does not dissolve in water? (a) food colour (b) sugar (c) small pebbles (d) glucose powder
13. 13.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
14. 14.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
15. 15.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sugar (d) sand
16. 16.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
17. 17.True or false: a balloon is needed for the dissolving test. (a) True (b) False
18. 18.True or false: a mirror is needed for the dissolving test. (a) False (b) True
19. 19.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) sugar in warm water
20. 20.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) cooking oil (d) food colour
21. 21.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it sank as sand (c) it spread in the water (d) it became air
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) cotton wool (d) a clock or timer
23. 23.⚖️ 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
24. 24.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) table salt (d) small pebbles
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the water temperature (c) time to dissolve (d) the amount of water
28. 28.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) let the water evaporate (d) stir it more
29. 29.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
30. 30.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.True or false: sugar in icy water dissolves slower. (a) True (b) False
33. 33.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) warm water is thicker (c) particles move faster (d) sugar likes the dark
34. 34.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.True or false: sawdust dissolves in water. (a) False (b) True
37. 37.True or false: honey is not needed for the dissolving test. (a) False (b) True
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) faster (d) slower

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