Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 972 · 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.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a clean glass (d) a balloon
4. 4.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the filter adds soap (d) the water evaporates
5. 5.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) tea leaves from tea (c) bad grains from rice (d) salt from sea water
6. 6.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a battery cell (d) cotton or cloth
7. 7.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) mud from water (c) husk from rice grain (d) small stones from dal
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) gravel from fine sand (c) bad grains from rice (d) tea leaves from tea
11. 11.🫗 Which of these is done by sieving? (a) bad grains from rice (b) chaff from wheat grain (c) bran from wheat flour (d) small stones from dal
12. 12.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
13. 13.True or false: bad grains from rice is done by filtering. (a) True (b) False
14. 14.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
17. 17.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
19. 19.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
20. 20.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
22. 22.🫗 How do we separate bran from wheat flour? (a) sieving (b) handpicking (c) winnowing (d) evaporating
23. 23.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) yeast (c) a magnet (d) turmeric powder
25. 25.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) tea leaves from tea
26. 26.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
27. 27.True or false: husk from rice grain is done by winnowing. (a) False (b) True
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) a funnel (d) sand and pebbles
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a battery cell (d) a funnel
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a mirror (d) sand and pebbles
32. 32.⚖️ 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
33. 33.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
35. 35.True or false: small stones from dal is done by handpicking. (a) False (b) True
36. 36.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
37. 37.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) sieving (d) handpicking
38. 38.True or false: mud from water is done by filtering. (a) False (b) True
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured

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