Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 341 · 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.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) wash hands afterwards (d) lick your fingers
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a balloon
3. 3.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.True or false: small stones from dal is done by evaporating. (a) False (b) True
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🫗 How do we separate bad grains from rice? (a) sieving (b) winnowing (c) filtering (d) handpicking
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a mirror (d) muddy water
10. 10.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
11. 11.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, if it is clear (d) yes, always
12. 12.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) chaff from wheat grain (c) sugar from sugar water (d) small stones from dal
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) a clean glass
14. 14.🫗 How do we separate sugar from sugar water? (a) sieving (b) filtering (c) winnowing (d) evaporating
15. 15.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
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 change it (b) we keep it the same (c) we measure it
18. 18.True or false: sugar from sugar water is done by evaporating. (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) a battery cell (d) cotton or cloth
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
21. 21.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
22. 22.True or false: salt from sea water is done by filtering. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
24. 24.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) small stones from dal (d) bad grains from rice
25. 25.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
26. 26.True or false: tea leaves from tea is done by filtering. (a) True (b) False
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
28. 28.⚖️ 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 glass (b) the same funnel (c) the filter material (d) the amount poured
29. 29.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
31. 31.🫗 How do we separate husk from rice grain? (a) winnowing (b) filtering (c) handpicking (d) evaporating
32. 32.True or false: small stones from dal is done by handpicking. (a) False (b) True
33. 33.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
34. 34.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
37. 37.True or false: salt from sea water is done by winnowing. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the amount poured (c) the same glass (d) how clear the water is
39. 39.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) turmeric powder (d) a clean glass

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