Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 540 · 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.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
2. 2.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
3. 3.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
4. 4.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
5. 5.🫗 How do we separate gravel from fine sand? (a) evaporating (b) filtering (c) sieving (d) winnowing
6. 6.⚖️ 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
7. 7.🫗 Which of these is done by winnowing? (a) mud from water (b) husk from rice grain (c) gravel from fine sand (d) sugar from sugar water
8. 8.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bad grains from rice (c) bran from wheat flour (d) sugar from sugar water
9. 9.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
10. 10.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
11. 11.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
12. 12.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
13. 13.⚖️ 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 filter material (c) the amount poured
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a magnet (c) a clean glass (d) a funnel
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) cotton or cloth (d) muddy water
16. 16.🫗 Which of these is done by sieving? (a) salt from sea water (b) bad grains from rice (c) bran from wheat flour (d) sugar from sugar water
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) sand and pebbles (d) muddy water
18. 18.True or false: bad grains from rice is done by handpicking. (a) False (b) True
19. 19.True or false: small stones from dal is done by evaporating. (a) False (b) True
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) hot (d) salty
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) sand and pebbles (d) a clean glass
23. 23.True or false: salt from sea water is done by winnowing. (a) True (b) False
24. 24.⚖️ 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 measure it (c) we change it
25. 25.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) muddy water (d) a funnel
27. 27.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
28. 28.🫗 How do we separate bran from wheat flour? (a) sieving (b) winnowing (c) evaporating (d) handpicking
29. 29.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) winnowing (c) evaporating (d) filtering
30. 30.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
31. 31.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
33. 33.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
34. 34.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
35. 35.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
36. 36.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) cotton or cloth (d) sand and pebbles
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) sand and pebbles (c) yeast (d) a balloon
39. 39.True or false: small stones from dal is done by handpicking. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False

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