Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 393 · 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.⚖️ 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
2. 2.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
4. 4.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
5. 5.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
6. 6.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) filtering (d) handpicking
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
8. 8.🧺 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) yeast
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the filter material (c) how clear the water is (d) the same muddy water
10. 10.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) chaff from wheat grain (d) bran from wheat flour
11. 11.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
12. 12.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
13. 13.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it dissolves (d) it sinks to the bottom
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a mirror (c) a battery cell (d) sand and pebbles
15. 15.⚖️ 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 same funnel
16. 16.⚖️ 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) False (b) True
17. 17.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
19. 19.True or false: tea leaves from tea is done by sieving. (a) False (b) True
20. 20.True or false: small stones from dal is done by handpicking. (a) False (b) True
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a magnet
22. 22.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
23. 23.True or false: tea leaves from tea is done by filtering. (a) True (b) False
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) muddy water (d) cotton or cloth
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) sieving (c) winnowing (d) handpicking
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) a funnel (d) cotton or cloth
30. 30.🛟 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
31. 31.True or false: gravel from fine sand is done by filtering. (a) True (b) False
32. 32.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) salt from sea water (d) sugar from sugar water
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
34. 34.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
38. 38.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
39. 39.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) muddy water (c) turmeric powder (d) a magnet

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