Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 807 · 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 should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
2. 2.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a balloon (c) a magnet (d) a battery cell
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🛟 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
5. 5.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
6. 6.True or false: small stones from dal is done by handpicking. (a) True (b) False
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) muddy water (d) turmeric powder
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same muddy water (c) the filter material (d) the amount poured
9. 9.🫗 Which of these is done by evaporating? (a) salt from sea water (b) gravel from fine sand (c) mud from water (d) bad grains from rice
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) muddy water (d) cotton or cloth
11. 11.True or false: salt from sea water is done by winnowing. (a) False (b) True
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) muddy water (d) sand and pebbles
13. 13.⚖️ 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
14. 14.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) winnowing (d) handpicking
15. 15.True or false: gravel from fine sand is done by filtering. (a) True (b) False
16. 16.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
17. 17.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a balloon (d) cotton or cloth
19. 19.True or false: bad grains from rice is done by handpicking. (a) False (b) True
20. 20.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
21. 21.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
22. 22.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) gravel from fine sand (c) tea leaves from tea (d) sugar from sugar water
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same glass (c) how clear the water is (d) the same funnel
24. 24.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
25. 25.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
27. 27.🫗 How do we separate tea leaves from tea? (a) evaporating (b) sieving (c) winnowing (d) filtering
28. 28.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
30. 30.🫗 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
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.True or false: sugar from sugar water is done by filtering. (a) False (b) True
33. 33.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ 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) True (b) False
35. 35.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🫗 How do we separate bran from wheat flour? (a) sieving (b) filtering (c) winnowing (d) handpicking
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
40. 40.🔮 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) yes, all of it (d) it turns to sand

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