Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 349 · 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 hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a battery cell (d) sand and pebbles
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the filter material (c) how clear the water is (d) the same glass
4. 4.⚖️ 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 muddy water (b) the same funnel (c) the filter material (d) how clear the water is
5. 5.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) filtering (d) winnowing
6. 6.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
7. 7.True or false: salt from sea water is done by handpicking. (a) False (b) True
8. 8.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
9. 9.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) gravel from fine sand (c) mud from water (d) husk from rice grain
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
11. 11.🛟 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
12. 12.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) chaff from wheat grain
13. 13.True or false: salt from sea water is done by evaporating. (a) True (b) False
14. 14.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) cotton or cloth (d) a magnet
17. 17.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bran from wheat flour (c) small stones from dal (d) mud from water
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
20. 20.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
21. 21.True or false: bad grains from rice is done by handpicking. (a) False (b) True
22. 22.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) evaporating (d) handpicking
23. 23.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) handpicking (d) winnowing
24. 24.True or false: husk from rice grain is done by evaporating. (a) True (b) False
25. 25.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a funnel (d) yeast
27. 27.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
28. 28.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
29. 29.🫗 How do we separate bran from wheat flour? (a) evaporating (b) winnowing (c) handpicking (d) sieving
30. 30.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
31. 31.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
32. 32.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
33. 33.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) a mirror (d) a battery cell
34. 34.⚖️ 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
35. 35.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) a balloon (d) turmeric powder
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a magnet (d) a mirror
39. 39.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) handpicking (d) winnowing
40. 40.⚖️ 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) True (b) False

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