Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 258 · 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.⚖️ 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) how clear the water is (c) the amount poured (d) the filter material
2. 2.True or false: small stones from dal is done by filtering. (a) True (b) False
3. 3.🫗 Which of these is done by sieving? (a) salt from sea water (b) small stones from dal (c) husk from rice grain (d) bran from wheat flour
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a balloon (d) a magnet
5. 5.⚖️ 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
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
7. 7.🫗 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
8. 8.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
9. 9.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) tea leaves from tea (c) small stones from dal (d) gravel from fine sand
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
12. 12.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
13. 13.🔮 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
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) turmeric powder (c) muddy water (d) a funnel
15. 15.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
16. 16.🔮 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
17. 17.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
18. 18.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
20. 20.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
21. 21.True or false: husk from rice grain is done by filtering. (a) False (b) True
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) sand and pebbles (d) muddy water
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) cotton or cloth (d) sand and pebbles
24. 24.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
28. 28.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bran from wheat flour (c) sugar from sugar water (d) tea leaves from tea
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) muddy water (c) yeast (d) turmeric powder
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a funnel (d) a battery cell
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a magnet (d) a clean glass
34. 34.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.True or false: gravel from fine sand is done by sieving. (a) True (b) False
37. 37.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
38. 38.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a balloon
40. 40.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the salt (d) the water

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