Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 638 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) a funnel (d) muddy water
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) yeast (d) muddy water
3. 3.🫗 How do we separate bad grains from rice? (a) evaporating (b) filtering (c) sieving (d) handpicking
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) a magnet (d) muddy water
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
6. 6.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
7. 7.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
8. 8.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
9. 9.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
10. 10.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) bran from wheat flour (c) mud from water (d) husk from rice grain
11. 11.🫗 Which of these is done by filtering? (a) salt from sea water (b) husk from rice grain (c) gravel from fine sand (d) tea leaves from tea
12. 12.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
13. 13.⚖️ 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
14. 14.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
15. 15.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
16. 16.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) sugar from sugar water (c) bran from wheat flour (d) small stones from dal
17. 17.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
18. 18.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
19. 19.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) yeast (d) a balloon
21. 21.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
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 same muddy water (c) the filter material
24. 24.True or false: bad grains from rice is done by winnowing. (a) False (b) True
25. 25.True or false: small stones from dal is done by filtering. (a) False (b) True
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a clean glass (d) a magnet
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) yeast (d) a clean glass
28. 28.⚖️ 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 measure it (c) we change it
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
33. 33.⚖️ 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) the filter material (d) the same muddy water
34. 34.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
36. 36.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
37. 37.🫗 How do we separate small stones from dal? (a) evaporating (b) sieving (c) winnowing (d) handpicking
38. 38.True or false: bad grains from rice is done by handpicking. (a) False (b) True
39. 39.⚖️ 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
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind

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