Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 759 · 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.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: yeast is needed for the muddy water filter. (a) True (b) False
3. 3.🛟 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
4. 4.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
5. 5.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
6. 6.🔍 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
7. 7.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
9. 9.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a mirror (d) muddy water
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
12. 12.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a clean glass (d) a balloon
13. 13.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
14. 14.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
15. 15.True or false: cotton or cloth is not 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 filter material (b) the same funnel (c) how clear the water is
17. 17.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
18. 18.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) muddy water (c) a funnel (d) cotton or cloth
20. 20.True or false: mud from water is done by sieving. (a) True (b) False
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same glass (c) the filter material (d) the amount poured
23. 23.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.🫗 Which of these is done by winnowing? (a) mud from water (b) small stones from dal (c) chaff from wheat grain (d) gravel from fine sand
26. 26.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
27. 27.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) tea leaves from tea (c) bad grains from rice (d) mud from water
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) muddy water (d) yeast
32. 32.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) filtering (d) handpicking
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) turmeric powder (d) sand and pebbles
34. 34.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
35. 35.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) salt from sea water
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a balloon (d) cotton or cloth
37. 37.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) small stones from dal (c) salt from sea water (d) husk from rice grain
38. 38.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a mirror (c) cotton or cloth (d) turmeric powder
39. 39.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) handpicking
40. 40.True or false: bran from wheat flour is done by sieving. (a) False (b) True

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