Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 102 · 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.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) handpicking (d) evaporating
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) turmeric powder (d) a magnet
4. 4.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a battery cell (d) sand and pebbles
6. 6.⚖️ 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
7. 7.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
8. 8.🫗 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
9. 9.True or false: salt from sea water is done by sieving. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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 muddy water (c) the same funnel (d) the filter material
12. 12.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) mud from water (c) husk from rice grain (d) gravel from fine sand
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) a clean glass (d) sand and pebbles
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) a clean glass (d) cotton or cloth
15. 15.True or false: bran from wheat flour is done by sieving. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) a mirror (d) a magnet
19. 19.True or false: mud from water is done by filtering. (a) True (b) False
20. 20.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
21. 21.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) sieving (d) evaporating
23. 23.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
24. 24.🫗 Which of these is done by handpicking? (a) small stones from dal (b) chaff from wheat grain (c) bran from wheat flour (d) sugar from sugar water
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) yeast
26. 26.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: yeast is needed for the muddy water filter. (a) True (b) False
28. 28.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) gravel from fine sand (c) small stones from dal (d) salt from sea water
29. 29.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
30. 30.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
31. 31.🫗 How do we separate salt from sea water? (a) filtering (b) sieving (c) handpicking (d) evaporating
32. 32.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
33. 33.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
34. 34.⚖️ 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) how clear the water is (c) the same muddy water
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a magnet
36. 36.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
37. 37.🛟 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
38. 38.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
39. 39.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
40. 40.True or false: a mirror is needed for the muddy water filter. (a) True (b) False

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