Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 832 · 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.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
2. 2.⚖️ 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
3. 3.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
6. 6.⚖️ 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
7. 7.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
8. 8.True or false: small stones from dal is done by handpicking. (a) False (b) True
9. 9.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) muddy water (d) sand and pebbles
11. 11.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🫗 How do we separate husk from rice grain? (a) winnowing (b) handpicking (c) filtering (d) evaporating
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) muddy water (c) cotton or cloth (d) a clean glass
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same glass (c) the filter material
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) muddy water (d) a battery cell
18. 18.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) evaporating
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) a balloon
20. 20.🫗 How do we separate sugar from sugar water? (a) evaporating (b) handpicking (c) winnowing (d) filtering
21. 21.True or false: gravel from fine sand is done by sieving. (a) True (b) False
22. 22.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) filtering (d) evaporating
23. 23.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
24. 24.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) muddy water (d) a battery cell
25. 25.True or false: salt from sea water is done by evaporating. (a) False (b) True
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) turmeric powder
28. 28.🔮 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
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 filter material (c) how clear the water is (d) the amount poured
30. 30.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) chaff from wheat grain (c) gravel from fine sand (d) salt from sea water
31. 31.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) turmeric powder (c) muddy water (d) a funnel
33. 33.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) a battery cell (d) a magnet
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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 same funnel (c) the filter material (d) how clear the water is
36. 36.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) filtering (d) sieving
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) cotton or cloth (d) a clean glass
38. 38.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
40. 40.🫗 Which of these is done by filtering? (a) small stones from dal (b) mud from water (c) sugar from sugar water (d) bran from wheat flour

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