Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 901 · 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) not needed (b) needed
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
5. 5.True or false: salt from sea water is done by filtering. (a) False (b) True
6. 6.🫗 How do we separate small stones from dal? (a) evaporating (b) filtering (c) sieving (d) handpicking
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a clean glass (d) a mirror
8. 8.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) yeast (d) turmeric powder
9. 9.🔮 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
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a battery cell (d) cotton or cloth
11. 11.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
12. 12.⚖️ 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) the amount poured (c) how clear the water is (d) the same funnel
13. 13.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) small stones from dal (c) tea leaves from tea (d) husk from rice grain
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) yeast (d) cotton or cloth
15. 15.🔮 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
16. 16.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
17. 17.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
18. 18.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
19. 19.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) gravel from fine sand (c) salt from sea water (d) chaff from wheat grain
21. 21.⚖️ 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) how clear the water is (c) the same muddy water (d) the filter material
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) a funnel (d) turmeric powder
23. 23.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it turns to sand (d) it dissolves
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) sand and pebbles (d) muddy water
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
28. 28.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
29. 29.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) evaporating (d) handpicking
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a clean glass (d) sand and pebbles
35. 35.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) sieving (d) filtering
36. 36.True or false: bad grains from rice is done by winnowing. (a) True (b) False
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a funnel (d) yeast
38. 38.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) a balloon
40. 40.🫗 Which of these is done by filtering? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) tea leaves from tea

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