Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 389 · 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 does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
2. 2.🔮 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
3. 3.⚖️ 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
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) it turns to sand (d) no, salt passes through
6. 6.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) muddy water (d) sand and pebbles
8. 8.True or false: small stones from dal is done by evaporating. (a) True (b) False
9. 9.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) a mirror (d) muddy water
11. 11.⚖️ 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) False (b) True
12. 12.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) a balloon (d) a battery cell
13. 13.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, always (d) yes, if it is clear
14. 14.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
15. 15.True or false: salt from sea water is done by evaporating. (a) False (b) True
16. 16.True or false: bad grains from rice is done by winnowing. (a) True (b) False
17. 17.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
18. 18.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
19. 19.⚖️ 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) True (b) False
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) cotton or cloth (d) a clean glass
21. 21.⚖️ 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
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
25. 25.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same glass (d) the same muddy water
28. 28.⚖️ 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
29. 29.🫗 How do we separate sugar from sugar water? (a) evaporating (b) filtering (c) handpicking (d) winnowing
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) yeast
31. 31.True or false: husk from rice grain is done by filtering. (a) False (b) True
32. 32.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
33. 33.⚖️ 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) False (b) True
34. 34.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a battery cell (d) sand and pebbles
36. 36.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a balloon (d) a magnet
39. 39.🫗 How do we separate chaff from wheat grain? (a) sieving (b) handpicking (c) evaporating (d) winnowing
40. 40.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top

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