Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 822 · 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: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
2. 2.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
3. 3.⚖️ 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) how clear the water is (c) the same funnel (d) the same muddy water
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a magnet (c) a clean glass (d) muddy water
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a battery cell (d) a clean glass
6. 6.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) handpicking (d) winnowing
7. 7.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it turns to sand (d) it dissolves
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 amount poured (b) how clear the water is (c) the filter material (d) the same muddy water
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
10. 10.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) gravel from fine sand (c) mud from water (d) tea leaves from tea
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) yeast (c) cotton or cloth (d) a funnel
13. 13.⚖️ 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
14. 14.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
15. 15.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
17. 17.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) sieving (d) evaporating
18. 18.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) handpicking (d) filtering
19. 19.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) bad grains from rice (c) husk from rice grain (d) bran from wheat flour
20. 20.True or false: gravel from fine sand is done by filtering. (a) True (b) False
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) a funnel (d) sand and pebbles
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🛟 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
24. 24.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) bad grains from rice (c) mud from water (d) small stones from dal
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) hot (d) salty
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) cotton or cloth (d) a balloon
27. 27.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) sugar from sugar water (c) bran from wheat flour (d) salt from sea water
28. 28.True or false: bran from wheat flour is done by sieving. (a) False (b) True
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a funnel (c) turmeric powder (d) yeast
30. 30.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: husk from rice grain is done by winnowing. (a) True (b) False
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
33. 33.True or false: bad grains from rice is done by evaporating. (a) False (b) True
34. 34.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
35. 35.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
36. 36.🫗 Which of these is done by evaporating? (a) mud from water (b) bran from wheat flour (c) small stones from dal (d) salt from sea water
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a clean glass (c) a magnet (d) yeast
38. 38.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
39. 39.🫗 How do we separate bad grains from rice? (a) sieving (b) evaporating (c) filtering (d) handpicking
40. 40.True or false: bran from wheat flour is done by handpicking. (a) True (b) False

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