Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 461 · 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.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) nothing (d) the water
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) muddy water (d) a battery cell
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
6. 6.True or false: bran from wheat flour is done by sieving. (a) False (b) True
7. 7.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
8. 8.True or false: small stones from dal is done by evaporating. (a) False (b) True
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) a clean glass
11. 11.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
12. 12.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
13. 13.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bran from wheat flour (c) gravel from fine sand (d) small stones from dal
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) sand and pebbles (d) a balloon
17. 17.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) small stones from dal (c) bad grains from rice (d) salt from sea water
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🔍 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
20. 20.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
21. 21.🫗 How do we separate mud from water? (a) sieving (b) winnowing (c) handpicking (d) filtering
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a battery cell (d) a funnel
23. 23.⚖️ 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 amount poured (c) the filter material
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
26. 26.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same funnel (d) the same muddy water
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a funnel (d) a magnet
29. 29.⚖️ 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) how clear the water is (c) the filter material (d) the same funnel
30. 30.🫗 Which of these is done by filtering? (a) husk from rice grain (b) small stones from dal (c) salt from sea water (d) mud from water
31. 31.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) bran from wheat flour (d) bad grains from rice
32. 32.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
33. 33.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
34. 34.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) small stones from dal (c) chaff from wheat grain (d) salt from sea water
35. 35.⚖️ 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
36. 36.True or false: bad grains from rice is done by evaporating. (a) True (b) False
37. 37.⚖️ 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 funnel (c) how clear the water is
38. 38.⚖️ 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
39. 39.🫗 How do we separate salt from sea water? (a) winnowing (b) sieving (c) evaporating (d) handpicking
40. 40.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False

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