Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 64 · 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 glass”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
3. 3.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
4. 4.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
5. 5.🔮 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) yes, all of it (d) it turns to sugar
6. 6.⚖️ 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
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
8. 8.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a clean glass (d) muddy water
10. 10.True or false: small stones from dal is done by winnowing. (a) False (b) True
11. 11.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
12. 12.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) tea leaves from tea (c) bran from wheat flour (d) chaff from wheat grain
13. 13.🫗 Which of these is done by evaporating? (a) salt from sea water (b) small stones from dal (c) husk from rice grain (d) gravel from fine sand
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
15. 15.🫗 How do we separate salt from sea water? (a) sieving (b) filtering (c) evaporating (d) winnowing
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a magnet (d) cotton or cloth
17. 17.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
18. 18.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a magnet (d) a balloon
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) a funnel (d) a clean glass
20. 20.🫗 Which of these is done by sieving? (a) husk from rice grain (b) chaff from wheat grain (c) bran from wheat flour (d) bad grains from rice
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) sand and pebbles (c) a clean glass (d) cotton or cloth
22. 22.🫗 How do we separate husk from rice grain? (a) evaporating (b) winnowing (c) sieving (d) handpicking
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
25. 25.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
26. 26.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a balloon (c) turmeric powder (d) a battery cell
27. 27.⚖️ 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 same funnel (c) the amount poured (d) the filter material
28. 28.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) small stones from dal (d) gravel from fine sand
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) turmeric powder (d) cotton or cloth
30. 30.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
31. 31.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the salt (d) the mud
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
33. 33.⚖️ 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
34. 34.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
35. 35.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
36. 36.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a funnel (d) a balloon
38. 38.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a mirror (c) a funnel (d) a clean glass
40. 40.⚖️ 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

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