Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 248 · 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.🫗 Which of these is done by handpicking? (a) mud from water (b) bad grains from rice (c) husk from rice grain (d) bran from wheat flour
2. 2.🧺 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) yeast
3. 3.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.⚖️ 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) False (b) True
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
7. 7.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) winnowing (d) handpicking
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
9. 9.🛟 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
10. 10.⚖️ 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
11. 11.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
12. 12.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) a funnel (d) a balloon
15. 15.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
17. 17.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ 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
19. 19.True or false: bad grains from rice is done by evaporating. (a) False (b) True
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a mirror (c) a balloon (d) a battery cell
21. 21.True or false: bran from wheat flour is done by filtering. (a) False (b) True
22. 22.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a magnet (d) a mirror
23. 23.⚖️ 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
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
25. 25.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) yes, all of it (d) it turns to sugar
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) a magnet
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) a funnel (d) cotton or cloth
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
29. 29.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
30. 30.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) salt from sea water (c) chaff from wheat grain (d) sugar from sugar water
31. 31.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
33. 33.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
36. 36.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) cotton or cloth (d) turmeric powder
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
39. 39.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
40. 40.🫗 Which of these is done by handpicking? (a) salt from sea water (b) gravel from fine sand (c) husk from rice grain (d) small stones from dal

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