Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 705 · 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 left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
2. 2.🫗 How do we separate husk from rice grain? (a) winnowing (b) evaporating (c) sieving (d) handpicking
3. 3.🫗 Which of these is done by filtering? (a) mud from water (b) husk from rice grain (c) chaff from wheat grain (d) gravel from fine sand
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) turmeric powder (d) sand and pebbles
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a clean glass (d) muddy water
7. 7.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
8. 8.⚖️ 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
9. 9.🫗 Which of these is done by sieving? (a) small stones from dal (b) bran from wheat flour (c) salt from sea water (d) sugar from sugar water
10. 10.True or false: mud from water is done by handpicking. (a) False (b) True
11. 11.True or false: salt from sea water is done by evaporating. (a) True (b) False
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) muddy water (d) a clean glass
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) a mirror (d) a battery cell
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a balloon (c) a battery cell (d) a mirror
15. 15.⚖️ 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 funnel (c) the amount poured (d) the same muddy water
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
17. 17.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
19. 19.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
20. 20.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) cotton or cloth (d) a clean glass
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 measure it (b) we change it (c) we keep it the same
23. 23.⚖️ 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 same glass (c) how clear the water is (d) the filter material
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a mirror
25. 25.True or false: husk from rice grain is done by winnowing. (a) False (b) True
26. 26.⚖️ 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
27. 27.🫗 How do we separate small stones from dal? (a) winnowing (b) evaporating (c) sieving (d) handpicking
28. 28.True or false: bran from wheat flour is done by handpicking. (a) False (b) True
29. 29.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) winnowing (d) filtering
30. 30.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
31. 31.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
32. 32.🫗 How do we separate bran from wheat flour? (a) handpicking (b) winnowing (c) evaporating (d) sieving
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) sand and pebbles (c) cotton or cloth (d) muddy water
35. 35.🫗 How do we separate mud from water? (a) handpicking (b) winnowing (c) filtering (d) sieving
36. 36.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
37. 37.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) salt from sea water
38. 38.True or false: sugar from sugar water is done by winnowing. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
40. 40.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed

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