Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 528 · 40 questions

What you do (Choose the right way): 1. Put cotton or cloth in the funnel, then layers of sand and small pebbles. 2. Stand the funnel in a clean glass. 3. Pour muddy water in slowly and watch what drips out. 4. Compare the colour before and after — never drink it — and wash your hands.

1. 1.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
2. 2.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
4. 4.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
5. 5.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) muddy water (d) cotton or cloth
7. 7.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) small stones from dal
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
9. 9.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
10. 10.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) a magnet
12. 12.🫗 Which of these is done by sieving? (a) salt from sea water (b) bran from wheat flour (c) small stones from dal (d) chaff from wheat grain
13. 13.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) muddy water (d) a balloon
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
15. 15.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a magnet (d) a balloon
16. 16.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) cotton or cloth (d) turmeric powder
18. 18.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
19. 19.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
20. 20.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
23. 23.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
24. 24.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) sieving (c) filtering (d) winnowing
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
26. 26.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) evaporating (d) handpicking
27. 27.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a clean glass (c) yeast (d) a balloon
29. 29.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
32. 32.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) sand and pebbles (d) a mirror
34. 34.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
35. 35.🫗 Which of these is done by filtering? (a) small stones from dal (b) mud from water (c) bad grains from rice (d) sugar from sugar water
36. 36.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
38. 38.🫗 How do we separate sugar from sugar water? (a) evaporating (b) winnowing (c) filtering (d) handpicking
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
40. 40.True or false: salt from sea water is done by evaporating. (a) True (b) False

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