Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 79 · 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: a battery cell is not needed for the muddy water filter. (a) False (b) True
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a funnel (d) a balloon
3. 3.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
4. 4.True or false: salt from sea water is done by evaporating. (a) False (b) True
5. 5.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
6. 6.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
8. 8.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) a battery cell
12. 12.🔍 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 dissolves (d) it floats on top
13. 13.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
14. 14.⚖️ 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 measure it (c) we change it
15. 15.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
17. 17.True or false: bad grains from rice is done by sieving. (a) False (b) True
18. 18.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
19. 19.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
20. 20.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) chaff from wheat grain (c) salt from sea water (d) small stones from dal
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
22. 22.True or false: bran from wheat flour is done by sieving. (a) True (b) False
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) yeast (d) a funnel
24. 24.True or false: small stones from dal is done by filtering. (a) False (b) True
25. 25.🫗 How do we separate bran from wheat flour? (a) sieving (b) handpicking (c) winnowing (d) evaporating
26. 26.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
29. 29.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) bad grains from rice (c) gravel from fine sand (d) salt from sea water
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.True or false: mud from water is done by handpicking. (a) False (b) True
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a balloon (d) a clean glass
33. 33.🫗 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
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) a mirror (d) muddy water
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a clean glass (d) a mirror
36. 36.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
37. 37.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
38. 38.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a magnet (d) a clean glass
40. 40.🫗 How do we separate bad grains from rice? (a) sieving (b) filtering (c) winnowing (d) handpicking

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