Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 910 · 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? True or false: the filter material is the one thing we change. (a) True (b) False
2. 2.True or false: small stones from dal is done by handpicking. (a) True (b) False
3. 3.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
4. 4.True or false: salt from sea water is done by evaporating. (a) False (b) True
5. 5.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) muddy water (d) cotton or cloth
7. 7.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
8. 8.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
12. 12.True or false: yeast is needed for the muddy water filter. (a) True (b) False
13. 13.🛟 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
14. 14.🔮 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
15. 15.🫗 How do we separate salt from sea water? (a) evaporating (b) winnowing (c) filtering (d) handpicking
16. 16.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) turmeric powder (d) a battery cell
18. 18.⚖️ 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 muddy water
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) cotton or cloth (d) a funnel
21. 21.True or false: bad grains from rice is done by evaporating. (a) True (b) False
22. 22.🫗 Which of these is done by winnowing? (a) small stones from dal (b) salt from sea water (c) bran from wheat flour (d) chaff from wheat grain
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) muddy water (d) yeast
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) muddy water (d) yeast
25. 25.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a mirror (d) cotton or cloth
27. 27.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) handpicking (d) winnowing
28. 28.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
29. 29.⚖️ 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 muddy water (b) the same glass (c) how clear the water is (d) the filter material
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a balloon
31. 31.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
32. 32.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
33. 33.🔮 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
34. 34.True or false: small stones from dal is done by sieving. (a) True (b) False
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) turmeric powder
36. 36.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) winnowing (d) sieving
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) sand and pebbles (d) a clean glass
38. 38.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: sugar from sugar water is done by sieving. (a) True (b) False
40. 40.True or false: a balloon is needed for the muddy water filter. (a) False (b) True

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