Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 251 · 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 slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar left unstirred
2. 2.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) a teaspoon (d) a magnet
4. 4.⚖️ 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
5. 5.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
7. 7.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) cold water (d) a mirror
8. 8.True or false: a mirror is needed for the dissolving test. (a) True (b) False
9. 9.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar left unstirred (d) sugar in icy water
10. 10.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) faster (d) not at all
11. 11.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) a teaspoon (c) cold water (d) two clear glasses
12. 12.True or false: glucose powder dissolves in water. (a) False (b) True
13. 13.⚖️ 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) True (b) False
14. 14.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) glucose powder (d) small pebbles
15. 15.⚖️ 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) True (b) False
16. 16.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) powdered sugar (d) sugar in warm water
17. 17.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) cold water is wet (c) particles move faster (d) warm water is thicker
18. 18.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
19. 19.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar in icy water (d) sugar stirred well
20. 20.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) add more water (d) let the water evaporate
21. 21.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the amount of sugar (d) time to dissolve
24. 24.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) the sugar turns to salt (d) all of it dissolves
25. 25.True or false: sugar in icy water dissolves faster. (a) False (b) True
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a teaspoon (c) a clock or timer (d) a balloon
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the amount of sugar (c) time to dissolve (d) the kind of sugar
28. 28.True or false: a big sugar cube dissolves faster. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) food colour (d) chalk powder
30. 30.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a balloon (c) cold water (d) two clear glasses
31. 31.⚖️ 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) False (b) True
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
33. 33.🥄 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) baking soda (d) small pebbles
34. 34.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it turns blue (c) it dissolves (d) it floats up
35. 35.True or false: warm water is needed for the dissolving test. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) sand (d) table salt
37. 37.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) small pebbles (d) food colour
38. 38.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) cold water (d) a magnet
39. 39.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
40. 40.True or false: sand does not dissolve in water. (a) False (b) True

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