Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 319 · 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 is needed for the dissolving test? (a) cotton wool (b) a mirror (c) warm water (d) honey
2. 2.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) powdered sugar (d) sugar left unstirred
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
4. 4.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
5. 5.True or false: sugar stirred well dissolves slower. (a) True (b) False
6. 6.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
7. 7.True or false: sugar does not dissolve in water. (a) False (b) True
8. 8.True or false: baking soda does not dissolve in water. (a) True (b) False
9. 9.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
10. 10.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) cold water is wet (d) sugar likes the dark
11. 11.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🔍 Which is the odd one out? (a) food colour (b) sand (c) small pebbles (d) cooking oil
13. 13.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
14. 14.True or false: powdered sugar dissolves faster. (a) False (b) True
15. 15.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it settles at the bottom (d) it dissolves
16. 16.True or false: glucose powder dissolves in water. (a) True (b) False
17. 17.True or false: a comb is not needed for the dissolving test. (a) True (b) False
18. 18.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) stir it more (d) let the water evaporate
21. 21.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
22. 22.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) a comb (d) cotton wool
23. 23.⚖️ 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) time to dissolve (c) the amount of sugar (d) the amount of water
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the stirring (c) the amount of water (d) the kind of sugar
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) two clear glasses (d) cold water
27. 27.⚖️ 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 water
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
29. 29.⚖️ 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
30. 30.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
31. 31.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a crystal (c) a rainbow (d) a magnet
32. 32.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) two clear glasses (d) cotton wool
33. 33.True or false: chalk powder dissolves in water. (a) False (b) True
34. 34.True or false: a big sugar cube dissolves slower. (a) False (b) True
35. 35.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) food colour
36. 36.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
37. 37.⚖️ 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) False (b) True
38. 38.True or false: cold water is needed for the dissolving test. (a) True (b) False
39. 39.🥄 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) glucose powder (d) table salt
40. 40.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) glucose powder

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