Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 536 · 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 funnel is needed for the muddy water filter. (a) False (b) True
2. 2.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
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 filter material (b) how clear the water is (c) the same glass (d) the amount poured
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) cotton or cloth (c) muddy water (d) a clean glass
5. 5.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
7. 7.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) tea leaves from tea
8. 8.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) winnowing (d) sieving
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
10. 10.🧺 Do we need a battery cell 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) cotton or cloth (b) turmeric powder (c) a clean glass (d) sand and pebbles
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a magnet (d) a funnel
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) a funnel (d) muddy water
15. 15.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
16. 16.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) small stones from dal (d) salt from sea water
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
19. 19.🫗 How do we separate salt from sea water? (a) sieving (b) winnowing (c) handpicking (d) evaporating
20. 20.⚖️ 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) the same glass (c) how clear the water is
21. 21.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
24. 24.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
26. 26.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) filtering (d) evaporating
27. 27.🛟 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
28. 28.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
29. 29.⚖️ 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) False (b) True
30. 30.🫗 How do we separate mud from water? (a) sieving (b) evaporating (c) filtering (d) winnowing
31. 31.True or false: small stones from dal is done by sieving. (a) True (b) False
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) cotton or cloth (d) turmeric powder
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a funnel (d) a magnet
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same muddy water (c) the amount poured (d) the same glass
35. 35.⚖️ 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) True (b) False
36. 36.⚖️ 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
37. 37.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
38. 38.True or false: gravel from fine sand is done by winnowing. (a) False (b) True
39. 39.True or false: husk from rice grain is done by winnowing. (a) True (b) False
40. 40.True or false: mud from water is done by sieving. (a) False (b) True

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