Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 812 · 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.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a magnet (d) a funnel
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a mirror
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) a funnel
8. 8.🔮 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
9. 9.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
10. 10.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
12. 12.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
13. 13.🫗 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
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) a battery cell (d) a balloon
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a clean glass (c) muddy water (d) cotton or cloth
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
18. 18.🫗 How do we separate mud from water? (a) winnowing (b) handpicking (c) filtering (d) sieving
19. 19.🫗 How do we separate bran from wheat flour? (a) handpicking (b) filtering (c) sieving (d) evaporating
20. 20.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) sieving (d) winnowing
21. 21.⚖️ 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 funnel (b) the filter material (c) how clear the water is (d) the same glass
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) muddy water (d) cotton or cloth
23. 23.True or false: husk from rice grain is done by filtering. (a) False (b) True
24. 24.⚖️ 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) how clear the water is (c) the filter material
25. 25.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) sand and pebbles (d) muddy water
29. 29.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same glass (c) the filter material (d) how clear the water is
32. 32.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
33. 33.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) sugar from sugar water (c) chaff from wheat grain (d) bran from wheat flour
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a clean glass (d) a funnel
35. 35.True or false: salt from sea water is done by evaporating. (a) False (b) True
36. 36.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) sieving (c) filtering (d) winnowing
37. 37.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
38. 38.True or false: small stones from dal is done by handpicking. (a) False (b) True
39. 39.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False

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