Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 763 · 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? Which of these is the one thing we change? (a) the amount poured (b) how clear the water is (c) the same muddy water (d) the filter material
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
3. 3.🫗 How do we separate tea leaves from tea? (a) evaporating (b) sieving (c) filtering (d) handpicking
4. 4.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
5. 5.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
10. 10.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) sieving (d) filtering
11. 11.🫗 Which of these is done by filtering? (a) bad grains from rice (b) small stones from dal (c) salt from sea water (d) tea leaves from tea
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same funnel
13. 13.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) yeast (d) a mirror
15. 15.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
16. 16.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
19. 19.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
20. 20.True or false: mud from water is done by handpicking. (a) True (b) False
21. 21.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
22. 22.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
23. 23.🫗 Which of these is done by sieving? (a) small stones from dal (b) gravel from fine sand (c) sugar from sugar water (d) salt from sea water
24. 24.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
25. 25.True or false: salt from sea water is done by winnowing. (a) False (b) True
26. 26.True or false: gravel from fine sand is done by sieving. (a) True (b) False
27. 27.🫗 How do we separate small stones from dal? (a) sieving (b) winnowing (c) filtering (d) handpicking
28. 28.True or false: bad grains from rice is done by sieving. (a) True (b) False
29. 29.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) sand and pebbles (d) a funnel
32. 32.True or false: bran from wheat flour is done by sieving. (a) True (b) False
33. 33.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) small stones from dal (c) husk from rice grain (d) mud from water
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) clearer (d) salty
35. 35.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
36. 36.True or false: salt from sea water is done by evaporating. (a) False (b) True
37. 37.🫗 How do we separate husk from rice grain? (a) sieving (b) filtering (c) evaporating (d) winnowing
38. 38.True or false: small stones from dal is done by evaporating. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
40. 40.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it floats on top (d) it sinks to the bottom

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