Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 748 · 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.⚖️ 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 funnel
2. 2.⚖️ 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
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
4. 4.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
5. 5.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
6. 6.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
7. 7.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a magnet (d) yeast
9. 9.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
11. 11.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) a balloon
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) sand and pebbles (d) cotton or cloth
14. 14.⚖️ 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
15. 15.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a magnet (d) a funnel
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
18. 18.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) evaporating (d) filtering
19. 19.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) sand and pebbles (d) yeast
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) yeast
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
23. 23.True or false: small stones from dal is done by handpicking. (a) False (b) True
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🫗 Which of these is done by sieving? (a) bad grains from rice (b) small stones from dal (c) mud from water (d) bran from wheat flour
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
29. 29.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) winnowing (d) filtering
30. 30.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) mud from water (c) salt from sea water (d) bad grains from rice
31. 31.⚖️ 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 change it (c) we measure it
32. 32.True or false: small stones from dal is done by evaporating. (a) False (b) True
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.True or false: sugar from sugar water is done by sieving. (a) False (b) True
35. 35.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) muddy water (d) sand and pebbles
37. 37.🔮 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
38. 38.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
39. 39.True or false: husk from rice grain is done by handpicking. (a) False (b) True
40. 40.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed

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