Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 887 · 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.🫗 Which of these is done by winnowing? (a) mud from water (b) bad grains from rice (c) tea leaves from tea (d) chaff from wheat grain
2. 2.🫗 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
3. 3.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
4. 4.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) cotton or cloth (d) muddy water
7. 7.🛟 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
8. 8.🔍 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 floats on top (d) it dissolves
9. 9.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) winnowing (d) filtering
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
11. 11.True or false: bad grains from rice is done by sieving. (a) False (b) True
12. 12.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) small stones from dal (c) tea leaves from tea (d) bad grains from rice
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🫗 How do we separate gravel from fine sand? (a) handpicking (b) winnowing (c) sieving (d) filtering
15. 15.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) a funnel
18. 18.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) sand and pebbles (d) a funnel
20. 20.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
21. 21.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
22. 22.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
23. 23.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) chaff from wheat grain (c) mud from water (d) gravel from fine sand
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) yeast (d) a magnet
25. 25.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
26. 26.True or false: a balloon 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 same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: small stones from dal is done by evaporating. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) a balloon (d) a mirror
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
32. 32.🫗 Which of these is done by evaporating? (a) salt from sea water (b) small stones from dal (c) mud from water (d) bran from wheat flour
33. 33.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
34. 34.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bad grains from rice (c) chaff from wheat grain (d) sugar from sugar water
35. 35.⚖️ 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 muddy water (c) the filter material
36. 36.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
37. 37.🫗 Which of these is done by sieving? (a) salt from sea water (b) small stones from dal (c) husk from rice grain (d) bran from wheat flour
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) cotton or cloth (d) a balloon
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.⚖️ 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 funnel

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