Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 221 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a magnet (d) sand and pebbles
2. 2.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
3. 3.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
4. 4.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
6. 6.⚖️ 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 glass (b) the same muddy water (c) the amount poured (d) the filter material
7. 7.🫗 Which of these is done by sieving? (a) bad grains from rice (b) bran from wheat flour (c) chaff from wheat grain (d) salt from sea water
8. 8.⚖️ 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 same funnel
9. 9.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) muddy water (d) a funnel
11. 11.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
12. 12.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) winnowing (d) handpicking
13. 13.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
15. 15.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) filtering (d) winnowing
16. 16.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
17. 17.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
18. 18.True or false: gravel from fine sand is done by sieving. (a) False (b) True
19. 19.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
20. 20.True or false: small stones from dal is done by handpicking. (a) False (b) True
21. 21.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
22. 22.True or false: yeast is needed for the muddy water filter. (a) False (b) True
23. 23.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
24. 24.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) mud from water (c) husk from rice grain (d) small stones from dal
25. 25.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
26. 26.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) salt from sea water (c) husk from rice grain (d) mud from water
27. 27.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a balloon (d) a clean glass
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a funnel (c) a clean glass (d) muddy water
30. 30.⚖️ 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 amount poured (c) the same muddy water (d) the same glass
31. 31.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
32. 32.🫗 Which of these is done by filtering? (a) small stones from dal (b) bad grains from rice (c) sugar from sugar water (d) tea leaves from tea
33. 33.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a clean glass (c) sand and pebbles (d) cotton or cloth
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a mirror (d) cotton or cloth
36. 36.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) sieving (d) handpicking
37. 37.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) salt from sea water (d) bran from wheat flour
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
39. 39.⚖️ 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
40. 40.True or false: husk from rice grain is done by winnowing. (a) False (b) True

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