Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 685 · 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? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
2. 2.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the amount poured (c) the same muddy water (d) the filter material
4. 4.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
5. 5.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) salt from sea water (c) chaff from wheat grain (d) sugar from sugar water
6. 6.🧺 Do we need sand and pebbles 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 hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
8. 8.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a balloon (d) muddy water
10. 10.True or false: gravel from fine sand is done by evaporating. (a) True (b) False
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
12. 12.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
13. 13.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
14. 14.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) mud from water (c) bran from wheat flour (d) salt from sea water
15. 15.True or false: small stones from dal is done by handpicking. (a) True (b) False
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
17. 17.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
18. 18.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a funnel (d) yeast
22. 22.True or false: husk from rice grain is done by winnowing. (a) True (b) False
23. 23.⚖️ 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) False (b) True
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
25. 25.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
26. 26.True or false: chaff from wheat grain is done by filtering. (a) False (b) True
27. 27.True or false: bran from wheat flour is done by filtering. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
29. 29.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same muddy water (c) the amount poured (d) how clear the water is
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) cotton or cloth (d) a clean glass
33. 33.⚖️ 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
34. 34.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
35. 35.⚖️ 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
36. 36.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
37. 37.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a battery cell (d) a clean glass
39. 39.🫗 How do we separate salt from sea water? (a) sieving (b) handpicking (c) evaporating (d) winnowing
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a clean glass (c) cotton or cloth (d) muddy water

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