Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 646 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) muddy water (d) a funnel
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a mirror
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
4. 4.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
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 measure it (b) we change it (c) we keep it the same
6. 6.🫗 How do we separate bad grains from rice? (a) filtering (b) sieving (c) handpicking (d) evaporating
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
8. 8.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
9. 9.True or false: chaff from wheat grain is done by filtering. (a) False (b) True
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a magnet (c) muddy water (d) turmeric powder
11. 11.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
12. 12.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
14. 14.🔮 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
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
16. 16.⚖️ 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
17. 17.⚖️ 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) False (b) True
18. 18.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) turmeric powder (d) sand and pebbles
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) muddy water (d) a magnet
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
22. 22.🛟 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
23. 23.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the same muddy water (d) the same glass
25. 25.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
26. 26.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a magnet (d) muddy water
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a funnel (d) turmeric powder
30. 30.🫗 Which of these is done by evaporating? (a) small stones from dal (b) sugar from sugar water (c) bran from wheat flour (d) gravel from fine sand
31. 31.🫗 Which of these is done by sieving? (a) bad grains from rice (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal
32. 32.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
33. 33.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) yeast (d) turmeric powder
35. 35.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) turmeric powder (d) yeast
36. 36.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) salt from sea water (c) bran from wheat flour (d) small stones from dal
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a clean glass (d) a funnel
38. 38.True or false: small stones from dal is done by handpicking. (a) False (b) True
39. 39.True or false: small stones from dal is done by sieving. (a) False (b) True
40. 40.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) winnowing (d) handpicking

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