Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 611 · 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.True or false: gravel from fine sand is done by sieving. (a) False (b) True
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
3. 3.🔍 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
4. 4.⚖️ 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
5. 5.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) filtering (d) handpicking
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
7. 7.⚖️ 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 funnel (c) the filter material (d) the amount poured
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) muddy water (d) a clean glass
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
10. 10.True or false: bad grains from rice is done by handpicking. (a) False (b) True
11. 11.⚖️ 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 amount poured (c) how clear the water is (d) the filter material
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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a magnet (d) a clean glass
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
15. 15.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
16. 16.🔮 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
17. 17.🛟 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
18. 18.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
20. 20.🫗 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
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
22. 22.🧺 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
23. 23.🫗 How do we separate bad grains from rice? (a) filtering (b) winnowing (c) sieving (d) handpicking
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
26. 26.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
27. 27.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) sugar from sugar water (c) gravel from fine sand (d) salt from sea water
30. 30.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) turmeric powder
33. 33.🫗 Which of these is done by sieving? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) sugar from sugar water
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
35. 35.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) chaff from wheat grain (d) salt from sea water
36. 36.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
37. 37.⚖️ 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
38. 38.🫗 How do we separate husk from rice grain? (a) sieving (b) handpicking (c) winnowing (d) evaporating
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
40. 40.🫗 How do we separate small stones from dal? (a) evaporating (b) sieving (c) filtering (d) handpicking

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