Separating Mixtures Experiment Worksheet

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

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