Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 724 · 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? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.🫗 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
5. 5.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) sieving (d) handpicking
6. 6.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
7. 7.🫗 Which of these is done by handpicking? (a) mud from water (b) small stones from dal (c) sugar from sugar water (d) bran from wheat flour
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
10. 10.⚖️ 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 glass
11. 11.🔮 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
12. 12.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
13. 13.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) bran from wheat flour (c) husk from rice grain (d) salt from sea water
14. 14.⚖️ 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) True (b) False
15. 15.🫗 Which of these is done by evaporating? (a) mud from water (b) small stones from dal (c) salt from sea water (d) gravel from fine sand
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) sand and pebbles (d) a balloon
17. 17.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
18. 18.🫗 How do we separate small stones from dal? (a) sieving (b) handpicking (c) evaporating (d) winnowing
19. 19.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
21. 21.🛟 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
22. 22.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal
23. 23.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
24. 24.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) filtering (d) handpicking
25. 25.⚖️ 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
26. 26.True or false: mud from water is done by handpicking. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) evaporating (d) filtering
29. 29.True or false: bad grains from rice is done by filtering. (a) False (b) True
30. 30.True or false: husk from rice grain is done by filtering. (a) True (b) False
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a mirror (d) a clean glass
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) a mirror (d) a balloon
35. 35.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
36. 36.⚖️ 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 muddy water (c) how clear the water is
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same funnel (c) the filter material
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) cotton or cloth (d) turmeric powder
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) cotton or cloth (d) turmeric powder
40. 40.⚖️ 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 filter material (c) the same funnel (d) how clear the water is

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