Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 568 · 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.🫗 Which of these is done by winnowing? (a) salt from sea water (b) bran from wheat flour (c) chaff from wheat grain (d) bad grains from rice
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
4. 4.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a balloon (d) sand and pebbles
6. 6.🫗 How do we separate sugar from sugar water? (a) sieving (b) handpicking (c) evaporating (d) filtering
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) a funnel (d) sand and pebbles
8. 8.🫗 Which of these is done by handpicking? (a) salt from sea water (b) gravel from fine sand (c) husk from rice grain (d) bad grains from rice
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, always (d) yes, if it is cold
10. 10.⚖️ 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
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a magnet (d) a mirror
14. 14.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
15. 15.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) sieving (d) handpicking
16. 16.🫗 Which of these is done by filtering? (a) salt from sea water (b) tea leaves from tea (c) husk from rice grain (d) bad grains from rice
17. 17.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) turmeric powder (d) a clean glass
20. 20.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
21. 21.⚖️ 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
22. 22.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a battery cell
24. 24.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
25. 25.🫗 How do we separate chaff from wheat grain? (a) sieving (b) handpicking (c) evaporating (d) winnowing
26. 26.⚖️ 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
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) turmeric powder (d) cotton or cloth
29. 29.⚖️ 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) the same funnel (c) how clear the water is
30. 30.True or false: gravel from fine sand is done by sieving. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
32. 32.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
33. 33.True or false: tea leaves from tea is done by winnowing. (a) False (b) True
34. 34.🛟 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
35. 35.🫗 How do we separate gravel from fine sand? (a) filtering (b) sieving (c) evaporating (d) winnowing
36. 36.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
39. 39.⚖️ 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
40. 40.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal

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