Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 94 · 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 funnel (b) muddy water (c) yeast (d) a clean glass
2. 2.True or false: bad grains from rice is done by sieving. (a) True (b) False
3. 3.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) handpicking (d) filtering
4. 4.True or false: bad grains from rice is done by evaporating. (a) False (b) True
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
6. 6.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) it turns to sand (d) yes, all of it
7. 7.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
8. 8.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
9. 9.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a magnet (d) cotton or cloth
11. 11.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
12. 12.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
13. 13.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
14. 14.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) winnowing (d) filtering
15. 15.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) cotton or cloth (d) a clean glass
18. 18.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) a magnet (d) a battery cell
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
20. 20.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) bran from wheat flour (c) sugar from sugar water (d) tea leaves from tea
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
22. 22.True or false: bad grains from rice is done by handpicking. (a) False (b) True
23. 23.🫗 How do we separate salt from sea water? (a) winnowing (b) sieving (c) filtering (d) evaporating
24. 24.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
25. 25.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
26. 26.🛟 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
27. 27.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) turmeric powder (d) a mirror
28. 28.🫗 Which of these is done by handpicking? (a) mud from water (b) sugar from sugar water (c) small stones from dal (d) husk from rice grain
29. 29.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) turmeric powder (d) yeast
30. 30.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
34. 34.⚖️ 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
35. 35.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
36. 36.🫗 How do we separate bad grains from rice? (a) filtering (b) sieving (c) winnowing (d) handpicking
37. 37.True or false: salt from sea water is done by filtering. (a) True (b) False
38. 38.True or false: bran from wheat flour is done by sieving. (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) how clear the water is (c) the same glass
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) muddy water (d) a mirror

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