Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 90 · 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.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
4. 4.🫗 Which of these is done by filtering? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) small stones from dal
5. 5.🫗 Which of these is done by winnowing? (a) mud from water (b) tea leaves from tea (c) chaff from wheat grain (d) sugar from sugar water
6. 6.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) handpicking
7. 7.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
9. 9.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
10. 10.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) small stones from dal (c) salt from sea water (d) tea leaves from tea
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) yeast (d) a clean glass
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a clean glass (d) turmeric powder
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a funnel (c) sand and pebbles (d) a clean glass
14. 14.⚖️ 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
15. 15.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
16. 16.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
17. 17.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
18. 18.🫗 Which of these is done by sieving? (a) mud from water (b) sugar from sugar water (c) bran from wheat flour (d) small stones from dal
19. 19.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
20. 20.True or false: husk from rice grain is done by winnowing. (a) True (b) False
21. 21.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) a balloon (d) a mirror
22. 22.True or false: bran from wheat flour is done by filtering. (a) True (b) False
23. 23.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
24. 24.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) husk from rice grain (c) mud from water (d) bran from wheat flour
25. 25.⚖️ 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
26. 26.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (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 kept the same. (a) False (b) True
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) muddy water
31. 31.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
32. 32.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a mirror (c) a magnet (d) turmeric powder
34. 34.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same glass (c) the filter material (d) the same funnel
36. 36.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) chaff from wheat grain (c) bran from wheat flour (d) bad grains from rice
37. 37.🔮 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
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) a funnel (d) cotton or cloth
39. 39.True or false: yeast is needed for the muddy water filter. (a) False (b) True
40. 40.🫗 How do we separate tea leaves from tea? (a) filtering (b) handpicking (c) sieving (d) winnowing

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