Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 645 · 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.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.True or false: sugar in icy water dissolves faster. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sugar (d) glucose powder
5. 5.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
7. 7.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ 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
10. 10.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ 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 kind of sugar (c) the amount of water (d) the amount of sugar
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 amount of sugar (b) the kind of sugar (c) the amount of water (d) the water temperature
14. 14.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
15. 15.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water
16. 16.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sand (d) table salt
17. 17.🥄 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) food colour (d) table salt
18. 18.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
19. 19.🥄 Which of these dissolves in water? (a) sugar (b) cooking oil (c) small pebbles (d) sawdust
20. 20.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a clock or timer (c) cold water (d) a balloon
21. 21.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
22. 22.True or false: sugar is needed for the dissolving test. (a) True (b) False
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a clock or timer (c) a mirror (d) two clear glasses
24. 24.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar left unstirred
25. 25.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) let the water evaporate (d) add more water
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) a magnet (d) two clear glasses
28. 28.⚖️ 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
29. 29.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a solution (d) a rainbow
30. 30.🥄 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) table salt (d) baking soda
31. 31.True or false: a big sugar cube dissolves faster. (a) True (b) False
32. 32.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
33. 33.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) two clear glasses (c) honey (d) a teaspoon
34. 34.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar in icy water (d) sugar stirred well
35. 35.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a teaspoon (c) warm water (d) a magnet
36. 36.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.True or false: sugar left unstirred dissolves slower. (a) False (b) True
39. 39.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.True or false: sugar left unstirred dissolves faster. (a) True (b) False

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