Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 729 · 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.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) handpicking (d) filtering
2. 2.⚖️ 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
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same glass
5. 5.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
6. 6.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a battery cell (d) a magnet
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) turmeric powder (d) yeast
11. 11.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
12. 12.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) a funnel (d) sand and pebbles
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
17. 17.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
18. 18.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) cotton or cloth (d) sand and pebbles
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
24. 24.True or false: husk from rice grain is done by evaporating. (a) False (b) True
25. 25.🔍 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
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) a magnet (d) yeast
28. 28.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
29. 29.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
30. 30.True or false: small stones from dal is done by evaporating. (a) False (b) True
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) turmeric powder (d) a clean glass
32. 32.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
33. 33.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
34. 34.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
35. 35.True or false: salt from sea water is done by handpicking. (a) True (b) False
36. 36.True or false: husk from rice grain is done by handpicking. (a) False (b) True
37. 37.🫗 Which of these is done by sieving? (a) mud from water (b) husk from rice grain (c) bad grains from rice (d) bran from wheat flour
38. 38.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed

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