Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 660 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
2. 2.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
3. 3.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
4. 4.🫗 How do we separate husk from rice grain? (a) evaporating (b) filtering (c) winnowing (d) handpicking
5. 5.🫗 Which of these is done by filtering? (a) bad grains from rice (b) chaff from wheat grain (c) mud from water (d) small stones from dal
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) the filter material (c) how clear the water is (d) the amount poured
9. 9.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) muddy water (c) cotton or cloth (d) a clean glass
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a clean glass (c) a mirror (d) a battery cell
12. 12.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) tea leaves from tea (d) salt from sea water
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
16. 16.True or false: mud from water is done by filtering. (a) True (b) False
17. 17.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same muddy water (c) the filter material
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
20. 20.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
21. 21.True or false: husk from rice grain is done by filtering. (a) True (b) False
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.True or false: bad grains from rice is done by handpicking. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
26. 26.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) sand and pebbles (d) yeast
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
31. 31.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, if it is clear (d) yes, always
32. 32.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
33. 33.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) leaves stay behind (d) tea stays behind
34. 34.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) sieving (d) winnowing
35. 35.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) sieving
36. 36.🫗 How do we separate mud from water? (a) sieving (b) handpicking (c) winnowing (d) filtering
37. 37.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same glass (c) how clear the water is (d) the filter material
39. 39.🫗 Which of these is done by sieving? (a) salt from sea water (b) small stones from dal (c) tea leaves from tea (d) gravel from fine sand
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a magnet (d) sand and pebbles

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