Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 21 · 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.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a battery cell (d) muddy water
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
6. 6.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
7. 7.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
8. 8.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) winnowing (d) sieving
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
10. 10.🧺 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) cotton or cloth
11. 11.🛟 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
12. 12.🫗 How do we separate mud from water? (a) winnowing (b) sieving (c) filtering (d) evaporating
13. 13.⚖️ 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
14. 14.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
15. 15.🫗 Which of these is done by sieving? (a) salt from sea water (b) bad grains from rice (c) bran from wheat flour (d) husk from rice grain
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
19. 19.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) small stones from dal (c) bad grains from rice (d) sugar from sugar water
20. 20.True or false: salt from sea water is done by evaporating. (a) True (b) False
21. 21.🫗 Which of these is done by filtering? (a) small stones from dal (b) chaff from wheat grain (c) bad grains from rice (d) tea leaves from tea
22. 22.True or false: bad grains from rice is done by handpicking. (a) False (b) True
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) muddy water (d) a clean glass
24. 24.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a mirror (c) turmeric powder (d) muddy water
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same funnel
26. 26.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
27. 27.True or false: small stones from dal is done by winnowing. (a) True (b) False
28. 28.🔮 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
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) turmeric powder (d) cotton or cloth
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) cotton or cloth (d) muddy water
32. 32.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same muddy water (d) the same funnel
34. 34.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
35. 35.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) tea leaves from tea (c) salt from sea water (d) husk from rice grain
36. 36.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) winnowing (d) sieving
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
38. 38.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
39. 39.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) sand and pebbles (d) a magnet

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