Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 820 · 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.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
2. 2.⚖️ 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
3. 3.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
4. 4.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
5. 5.True or false: sugar from sugar water is done by sieving. (a) True (b) False
6. 6.True or false: small stones from dal is done by handpicking. (a) False (b) True
7. 7.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
8. 8.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
9. 9.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
10. 10.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
11. 11.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
12. 12.🫗 Which of these is done by filtering? (a) salt from sea water (b) mud from water (c) bad grains from rice (d) gravel from fine sand
13. 13.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) tea leaves from tea (c) salt from sea water (d) chaff from wheat grain
14. 14.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the filter material (c) how clear the water is (d) the same glass
16. 16.🫗 How do we separate bran from wheat flour? (a) handpicking (b) sieving (c) winnowing (d) evaporating
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) a balloon (d) cotton or cloth
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) a balloon
20. 20.🫗 Which of these is done by sieving? (a) mud from water (b) small stones from dal (c) husk from rice grain (d) gravel from fine sand
21. 21.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) a mirror (d) a balloon
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
25. 25.True or false: gravel from fine sand is done by sieving. (a) False (b) True
26. 26.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) yeast (d) a clean glass
27. 27.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) sand and pebbles (d) a funnel
30. 30.🫗 How do we separate tea leaves from tea? (a) filtering (b) handpicking (c) evaporating (d) winnowing
31. 31.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a mirror (d) a funnel
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
35. 35.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
36. 36.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
37. 37.⚖️ 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 change it (c) we measure it
38. 38.True or false: yeast is needed for the muddy water filter. (a) True (b) False
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.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) chaff from wheat grain (c) small stones from dal (d) tea leaves from tea

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