Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 998 · 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 pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the filter material (c) how clear the water is (d) the same glass
3. 3.⚖️ 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
4. 4.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) muddy water (d) a funnel
6. 6.🫗 How do we separate bran from wheat flour? (a) evaporating (b) winnowing (c) sieving (d) handpicking
7. 7.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
8. 8.🛟 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
9. 9.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
10. 10.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bran from wheat flour (c) tea leaves from tea (d) salt from sea water
11. 11.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bad grains from rice (c) bran from wheat flour (d) mud from water
12. 12.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
13. 13.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a clean glass (c) muddy water (d) a funnel
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
17. 17.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) cotton or cloth (c) a magnet (d) yeast
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) cotton or cloth (c) a funnel (d) a clean glass
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) muddy water (d) a balloon
21. 21.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) bran from wheat flour (c) chaff from wheat grain (d) salt from sea water
22. 22.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: yeast is needed for the muddy water filter. (a) False (b) True
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a mirror (d) muddy water
25. 25.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it dissolves (d) it turns to sand
26. 26.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
27. 27.⚖️ 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
28. 28.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
29. 29.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
31. 31.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter traps mud (d) the filter adds soap
32. 32.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
33. 33.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
34. 34.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) a mirror (d) a battery cell
36. 36.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a clean glass (c) a magnet (d) a mirror
37. 37.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) sieving (d) handpicking
38. 38.True or false: small stones from dal is done by handpicking. (a) True (b) False
39. 39.⚖️ 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 amount poured (c) the filter material (d) the same glass
40. 40.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a battery cell (d) muddy water

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