Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 925 · 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.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the mud dissolves (d) the filter traps mud
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ 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 muddy water (b) the amount poured (c) the filter material (d) the same funnel
4. 4.🫗 How do we separate tea leaves from tea? (a) handpicking (b) winnowing (c) evaporating (d) filtering
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
6. 6.True or false: yeast is needed for the muddy water filter. (a) False (b) True
7. 7.🧺 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 balloon (d) cotton or cloth
8. 8.⚖️ 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 amount poured (c) the same funnel (d) the filter material
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
10. 10.🫗 Which of these is done by filtering? (a) salt from sea water (b) bad grains from rice (c) sugar from sugar water (d) mud from water
11. 11.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.🧺 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 battery cell (d) cotton or cloth
14. 14.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
17. 17.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
18. 18.True or false: small stones from dal is done by handpicking. (a) False (b) True
19. 19.🫗 How do we separate bad grains from rice? (a) filtering (b) winnowing (c) handpicking (d) sieving
20. 20.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) cotton or cloth (c) muddy water (d) a clean glass
22. 22.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
23. 23.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) chaff from wheat grain (c) mud from water (d) bad grains from rice
24. 24.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
25. 25.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
27. 27.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
29. 29.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) small stones from dal (c) tea leaves from tea (d) bad grains from rice
30. 30.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
31. 31.⚖️ 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
32. 32.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
33. 33.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) chaff from wheat grain (c) salt from sea water (d) husk from rice grain
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) muddy water (d) a funnel
35. 35.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) sand and pebbles (d) turmeric powder
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
38. 38.⚖️ 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
39. 39.🫗 How do we separate bran from wheat flour? (a) sieving (b) handpicking (c) winnowing (d) filtering
40. 40.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed

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