Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 351 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) a funnel (d) muddy water
4. 4.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) chaff from wheat grain (c) tea leaves from tea (d) small stones from dal
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a battery cell (d) muddy water
6. 6.⚖️ 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
7. 7.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) evaporating (d) winnowing
8. 8.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) sieving (d) handpicking
9. 9.🫗 Which of these is done by filtering? (a) mud from water (b) small stones from dal (c) sugar from sugar water (d) gravel from fine sand
10. 10.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🔮 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) it turns to sand (d) no, salt passes through
14. 14.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ 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 amount poured (d) the filter material
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
17. 17.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a magnet (d) a battery cell
18. 18.True or false: mud from water is done by winnowing. (a) False (b) True
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
20. 20.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) evaporating (d) sieving
21. 21.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
22. 22.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: mud from water is done by sieving. (a) True (b) False
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) a battery cell (d) yeast
25. 25.True or false: bad grains from rice is done by filtering. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.True or false: yeast is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a balloon (d) sand and pebbles
31. 31.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bran from wheat flour (c) bad grains from rice (d) husk from rice grain
32. 32.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
33. 33.True or false: tea leaves from tea is done by filtering. (a) True (b) False
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
35. 35.⚖️ 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
36. 36.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
37. 37.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
38. 38.True or false: mud from water is done by evaporating. (a) True (b) False
39. 39.🫗 Which of these is done by winnowing? (a) mud from water (b) tea leaves from tea (c) husk from rice grain (d) small stones from dal
40. 40.🫗 How do we separate gravel from fine sand? (a) handpicking (b) winnowing (c) filtering (d) sieving

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