Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 443 · 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? What do we do with “how clear the water is”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
3. 3.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
4. 4.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
5. 5.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
10. 10.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
13. 13.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
17. 17.🫗 Which of these is done by winnowing? (a) mud from water (b) tea leaves from tea (c) chaff from wheat grain (d) bad grains from rice
18. 18.🔮 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
19. 19.🫗 How do we separate bran from wheat flour? (a) evaporating (b) sieving (c) winnowing (d) handpicking
20. 20.🫗 Which of these is done by sieving? (a) mud from water (b) husk from rice grain (c) small stones from dal (d) bran from wheat flour
21. 21.🫗 Which of these is done by evaporating? (a) salt from sea water (b) gravel from fine sand (c) bad grains from rice (d) tea leaves from tea
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
23. 23.True or false: bad grains from rice is done by handpicking. (a) True (b) False
24. 24.True or false: bran from wheat flour is done by sieving. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) cotton or cloth (d) a funnel
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) cotton or cloth (d) muddy water
27. 27.🫗 How do we separate gravel from fine sand? (a) sieving (b) evaporating (c) handpicking (d) winnowing
28. 28.⚖️ 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) False (b) True
29. 29.🫗 How do we separate sugar from sugar water? (a) evaporating (b) winnowing (c) filtering (d) sieving
30. 30.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
31. 31.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
32. 32.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) yeast (d) a funnel
34. 34.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a balloon (d) a funnel
36. 36.🫗 Which of these is done by filtering? (a) bad grains from rice (b) mud from water (c) small stones from dal (d) bran from wheat flour
37. 37.⚖️ 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 same muddy water (c) the filter material (d) the amount poured
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False

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