Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 440 · 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 sieving? (a) bran from wheat flour (b) salt from sea water (c) chaff from wheat grain (d) mud from water
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
3. 3.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the same glass (d) the same muddy water
6. 6.⚖️ 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
7. 7.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) handpicking (d) winnowing
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
9. 9.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the mud dissolves (d) the filter traps mud
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🛟 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
12. 12.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a mirror
14. 14.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
15. 15.🔍 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 turns to sand (d) it dissolves
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
17. 17.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
18. 18.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
19. 19.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) sieving (d) handpicking
20. 20.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
21. 21.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) yeast (d) a clean glass
23. 23.True or false: husk from rice grain is done by handpicking. (a) False (b) True
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a battery cell (d) a clean glass
26. 26.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) evaporating (d) sieving
27. 27.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) winnowing (d) evaporating
30. 30.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: small stones from dal is done by sieving. (a) True (b) False
32. 32.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) evaporating
33. 33.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
34. 34.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) salt from sea water (d) bran from wheat flour
35. 35.True or false: bran from wheat flour is done by filtering. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) a balloon
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) how clear the water is (d) the amount poured
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a magnet (d) cotton or cloth
40. 40.⚖️ 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

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