Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 566 · 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? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the same funnel (d) the amount poured
2. 2.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) winnowing (d) handpicking
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a magnet (c) cotton or cloth (d) a funnel
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a magnet
6. 6.🫗 Which of these is done by sieving? (a) mud from water (b) bran from wheat flour (c) sugar from sugar water (d) salt from sea water
7. 7.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) sieving (d) handpicking
8. 8.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
9. 9.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a balloon (c) sand and pebbles (d) muddy water
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
12. 12.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
13. 13.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a clean glass (d) a magnet
15. 15.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a battery cell (d) a funnel
17. 17.True or false: salt from sea water is done by filtering. (a) True (b) False
18. 18.True or false: salt from sea water is done by evaporating. (a) True (b) False
19. 19.True or false: sugar from sugar water is done by winnowing. (a) True (b) False
20. 20.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) yeast (d) a magnet
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
24. 24.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
25. 25.⚖️ 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
26. 26.🫗 Which of these is done by handpicking? (a) salt from sea water (b) mud from water (c) husk from rice grain (d) bad grains from rice
27. 27.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
30. 30.🫗 How do we separate tea leaves from tea? (a) evaporating (b) winnowing (c) handpicking (d) filtering
31. 31.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a balloon
33. 33.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) bran from wheat flour (c) mud from water (d) husk from rice grain
34. 34.🫗 How do we separate salt from sea water? (a) winnowing (b) filtering (c) sieving (d) evaporating
35. 35.True or false: chaff from wheat grain is done by evaporating. (a) True (b) False
36. 36.🔍 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
37. 37.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) sieving (d) handpicking
38. 38.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: bad grains from rice is done by handpicking. (a) False (b) True
40. 40.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot

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