Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 131 · 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.🛟 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
2. 2.🫗 Which of these is done by filtering? (a) mud from water (b) salt from sea water (c) husk from rice grain (d) bran from wheat flour
3. 3.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) sieving (d) winnowing
4. 4.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a funnel (d) turmeric powder
6. 6.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bad grains from rice (c) tea leaves from tea (d) gravel from fine sand
7. 7.True or false: small stones from dal is done by evaporating. (a) False (b) True
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
9. 9.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) muddy water (d) a magnet
11. 11.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) sugar from sugar water (c) bad grains from rice (d) tea leaves from tea
12. 12.True or false: yeast is needed for the muddy water filter. (a) True (b) False
13. 13.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) handpicking (d) winnowing
14. 14.⚖️ 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
15. 15.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
16. 16.⚖️ 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 funnel (b) the amount poured (c) the same muddy water (d) the filter material
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) yeast (d) a balloon
18. 18.⚖️ 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
19. 19.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a mirror
21. 21.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) handpicking (d) evaporating
22. 22.True or false: salt from sea water is done by evaporating. (a) True (b) False
23. 23.🫗 Which of these is done by sieving? (a) husk from rice grain (b) salt from sea water (c) bran from wheat flour (d) tea leaves from tea
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 keep it the same (b) we change it (c) we measure it
25. 25.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) yeast (d) sand and pebbles
27. 27.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
28. 28.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
29. 29.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
30. 30.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
31. 31.True or false: bad grains from rice is done by handpicking. (a) True (b) False
32. 32.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
33. 33.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same muddy water (c) the same funnel (d) how clear the water is
35. 35.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
36. 36.🔮 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
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) cotton or cloth (d) a funnel
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a mirror
39. 39.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
40. 40.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand

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