Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 992 · 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.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) yeast (d) a funnel
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) leaves pass through (d) both stay behind
4. 4.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) winnowing (d) sieving
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
8. 8.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
9. 9.🔮 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) no, salt passes through (d) yes, all of it
10. 10.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) husk from rice grain (c) sugar from sugar water (d) small stones from dal
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) husk from rice grain (c) salt from sea water (d) small stones from dal
13. 13.⚖️ 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
14. 14.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
16. 16.🫗 Which of these is done by sieving? (a) mud from water (b) gravel from fine sand (c) tea leaves from tea (d) chaff from wheat grain
17. 17.True or false: salt from sea water is done by evaporating. (a) True (b) False
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a funnel (c) a battery cell (d) yeast
19. 19.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 How do we separate small stones from dal? (a) evaporating (b) filtering (c) handpicking (d) winnowing
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) yeast (c) cotton or cloth (d) a funnel
22. 22.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
23. 23.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
26. 26.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: salt from sea water is done by winnowing. (a) False (b) True
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) yeast (d) sand and pebbles
30. 30.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
31. 31.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) filtering (d) handpicking
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
33. 33.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a battery cell (c) turmeric powder (d) a magnet
34. 34.🧺 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
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
36. 36.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
37. 37.True or false: salt from sea water is done by sieving. (a) False (b) True
38. 38.⚖️ 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
39. 39.🫗 How do we separate chaff from wheat grain? (a) sieving (b) filtering (c) handpicking (d) winnowing
40. 40.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False

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