Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 477 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a mirror (d) a clean glass
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
4. 4.🫗 Which of these is done by handpicking? (a) small stones from dal (b) gravel from fine sand (c) chaff from wheat grain (d) mud from water
5. 5.True or false: bran from wheat flour is done by sieving. (a) False (b) True
6. 6.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
7. 7.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
9. 9.⚖️ 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
10. 10.🛟 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
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) muddy water (c) a funnel (d) cotton or cloth
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a balloon (d) a funnel
13. 13.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) cotton or cloth (d) a funnel
15. 15.True or false: mud from water is done by filtering. (a) True (b) False
16. 16.⚖️ 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
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
20. 20.True or false: small stones from dal is done by handpicking. (a) True (b) False
21. 21.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) evaporating (d) sieving
22. 22.🫗 How do we separate mud from water? (a) sieving (b) filtering (c) winnowing (d) evaporating
23. 23.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
24. 24.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) husk from rice grain (c) small stones from dal (d) mud from water
25. 25.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
26. 26.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) mud from water (c) small stones from dal (d) salt from sea water
27. 27.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bran from wheat flour (c) sugar from sugar water (d) husk from rice grain
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) muddy water (c) cotton or cloth (d) a clean glass
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) chaff from wheat grain (c) husk from rice grain (d) bad grains from rice
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a battery cell (d) muddy water
34. 34.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) a funnel (d) cotton or cloth
36. 36.🫗 How do we separate bad grains from rice? (a) sieving (b) evaporating (c) winnowing (d) handpicking
37. 37.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
39. 39.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
40. 40.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud

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