Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 767 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it dissolves (c) it floats up (d) it turns blue
2. 2.True or false: honey is needed for the dissolving test. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) sugar
4. 4.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) slower (d) not at all
6. 6.⚖️ 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 amount of sugar (c) the amount of water (d) the water temperature
7. 7.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.True or false: cooking oil does not dissolve in water. (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 amount of water”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.True or false: small pebbles dissolves in water. (a) False (b) True
12. 12.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) honey (d) cotton wool
13. 13.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
14. 14.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) chalk powder
16. 16.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
17. 17.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
18. 18.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) both the same (d) powdered sugar
19. 19.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sugar (d) sawdust
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) honey (d) a teaspoon
21. 21.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
22. 22.True or false: sugar in warm water dissolves slower. (a) True (b) False
23. 23.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
24. 24.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
25. 25.True or false: powdered sugar dissolves slower. (a) True (b) False
26. 26.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
27. 27.⚖️ 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 stirring (c) the kind of sugar (d) the water temperature
28. 28.⚖️ 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
29. 29.True or false: a comb is not needed for the dissolving test. (a) False (b) True
30. 30.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) small pebbles (d) sawdust
33. 33.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) keep it in a fridge (d) stir it more
34. 34.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a magnet (c) sugar (d) a teaspoon
35. 35.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a magnet (c) sugar (d) two clear glasses
36. 36.🧺 Which of these is needed for the dissolving test? (a) honey (b) a mirror (c) a magnet (d) cold water
37. 37.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
38. 38.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: sugar stirred well dissolves slower. (a) True (b) False

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