Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 977 · 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: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
2. 2.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a funnel (d) cotton or cloth
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) a funnel (d) cotton or cloth
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
6. 6.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) sieving (d) filtering
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
8. 8.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) sugar from sugar water (c) gravel from fine sand (d) small stones from dal
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
10. 10.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
12. 12.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
13. 13.True or false: bran from wheat flour is done by evaporating. (a) False (b) True
14. 14.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
15. 15.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) husk from rice grain (c) small stones from dal (d) mud from water
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a clean glass (c) muddy water (d) cotton or cloth
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) sand and pebbles (d) a funnel
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
19. 19.⚖️ 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
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
21. 21.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the salt (d) the mud
22. 22.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
24. 24.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
25. 25.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
26. 26.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
29. 29.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) yeast (c) cotton or cloth (d) muddy water
31. 31.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
33. 33.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
34. 34.True or false: mud from water is done by sieving. (a) True (b) False
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
37. 37.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
38. 38.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
39. 39.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) filtering (d) sieving
40. 40.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) evaporating (d) sieving

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