Dissolving Experiment Worksheet: Warm and Cold Water

Science experiments lesson 3: Dissolving sugar: warm vs cold water · Set 400 · 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) a comb (b) cotton wool (c) a teaspoon (d) a magnet
2. 2.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
3. 3.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
4. 4.🔍 Which is the odd one out? (a) food colour (b) small pebbles (c) chalk powder (d) sand
5. 5.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
7. 7.🔍 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
8. 8.🥄 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) small pebbles (d) food colour
9. 9.True or false: sugar in icy water dissolves faster. (a) False (b) True
10. 10.True or false: chalk powder dissolves in water. (a) True (b) False
11. 11.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
12. 12.True or false: powdered sugar dissolves faster. (a) False (b) True
13. 13.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
14. 14.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar stirred well (d) sugar left unstirred
15. 15.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) food colour
16. 16.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) particles move faster (d) cold water is wet
17. 17.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the water temperature (d) the stirring
19. 19.⚖️ 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 measure it (c) we change it
20. 20.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) chalk powder
21. 21.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
22. 22.⚖️ 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
23. 23.True or false: baking soda dissolves in water. (a) True (b) False
24. 24.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) glucose powder (d) sugar
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) warm water (d) a comb
27. 27.True or false: a comb is needed for the dissolving test. (a) False (b) True
28. 28.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a balloon (c) warm water (d) sugar
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the water temperature (d) the amount of water
30. 30.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
31. 31.True or false: table salt does not dissolve in water. (a) False (b) True
32. 32.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a balloon (c) a comb (d) a magnet
33. 33.⚖️ 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 stirring
34. 34.True or false: sugar is needed for the dissolving test. (a) False (b) True
35. 35.⚖️ 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 change it (c) we measure it
36. 36.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) baking soda (d) cooking oil
37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) a big sugar cube
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) a teaspoon (d) a balloon
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) False (b) True

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