Separating Mixtures Experiment Worksheet

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

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