Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 431 · 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? True or false: the same funnel is kept the same. (a) True (b) False
2. 2.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
6. 6.🫗 How do we separate gravel from fine sand? (a) handpicking (b) winnowing (c) sieving (d) evaporating
7. 7.True or false: small stones from dal is done by handpicking. (a) False (b) True
8. 8.🫗 Which of these is done by evaporating? (a) mud from water (b) chaff from wheat grain (c) salt from sea water (d) bad grains from rice
9. 9.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) filtering (d) winnowing
10. 10.🫗 How do we separate bran from wheat flour? (a) evaporating (b) filtering (c) sieving (d) handpicking
11. 11.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) winnowing (d) evaporating
12. 12.⚖️ 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
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a mirror (c) muddy water (d) a balloon
15. 15.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
16. 16.🧺 Do we need a balloon 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 same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.True or false: yeast is needed for the muddy water filter. (a) True (b) False
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
21. 21.🫗 How do we separate tea leaves from tea? (a) winnowing (b) sieving (c) evaporating (d) filtering
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a funnel (d) sand and pebbles
23. 23.⚖️ 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 amount poured
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) cotton or cloth (d) muddy water
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a mirror (c) cotton or cloth (d) a clean glass
26. 26.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
28. 28.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) yeast (d) cotton or cloth
30. 30.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
31. 31.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
32. 32.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
33. 33.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) sugar from sugar water (c) bad grains from rice (d) small stones from dal
34. 34.🫗 Which of these is done by sieving? (a) salt from sea water (b) gravel from fine sand (c) bad grains from rice (d) small stones from dal
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
37. 37.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
38. 38.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
39. 39.🛟 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
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a funnel (d) muddy water

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