Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 275 · 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) sugar from sugar water (b) husk from rice grain (c) chaff from wheat grain (d) gravel from fine sand
2. 2.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) salt from sea water (c) bad grains from rice (d) sugar from sugar water
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
4. 4.🔮 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
5. 5.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
6. 6.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a magnet (d) cotton or cloth
8. 8.⚖️ 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
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
10. 10.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) filtering (d) evaporating
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
12. 12.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
13. 13.🫗 How do we separate mud from water? (a) filtering (b) evaporating (c) handpicking (d) sieving
14. 14.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) handpicking (d) evaporating
15. 15.⚖️ 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
16. 16.⚖️ 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) True (b) False
17. 17.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
19. 19.🫗 How do we separate salt from sea water? (a) filtering (b) evaporating (c) handpicking (d) sieving
20. 20.🫗 Which of these is done by sieving? (a) bad grains from rice (b) husk from rice grain (c) bran from wheat flour (d) small stones from dal
21. 21.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) husk from rice grain (c) tea leaves from tea (d) bran from wheat flour
22. 22.🔮 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
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a balloon (d) cotton or cloth
26. 26.🫗 Which of these is done by winnowing? (a) small stones from dal (b) mud from water (c) husk from rice grain (d) sugar from sugar water
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) muddy water (d) yeast
28. 28.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
29. 29.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a magnet (d) cotton or cloth
31. 31.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it turns to sand (d) it dissolves
33. 33.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
34. 34.True or false: salt from sea water is done by handpicking. (a) False (b) True
35. 35.⚖️ 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 funnel (c) the amount poured (d) how clear the water is
36. 36.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a battery cell (c) a clean glass (d) a funnel
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.True or false: bran from wheat flour is done by sieving. (a) False (b) True

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