Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 771 · 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? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
3. 3.🫗 How do we separate husk from rice grain? (a) filtering (b) evaporating (c) winnowing (d) handpicking
4. 4.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
5. 5.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) winnowing (d) sieving
6. 6.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a magnet (d) muddy water
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) how clear the water is (c) the filter material (d) the amount poured
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
10. 10.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a balloon (d) a funnel
11. 11.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a clean glass (d) yeast
13. 13.True or false: small stones from dal is done by sieving. (a) True (b) False
14. 14.⚖️ 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
15. 15.True or false: small stones from dal is done by handpicking. (a) False (b) True
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same funnel (c) the filter material
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
21. 21.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Which of these is done by filtering? (a) salt from sea water (b) sugar from sugar water (c) mud from water (d) gravel from fine sand
23. 23.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
24. 24.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
25. 25.True or false: salt from sea water is done by filtering. (a) False (b) True
26. 26.🫗 Which of these is done by sieving? (a) small stones from dal (b) husk from rice grain (c) gravel from fine sand (d) salt from sea water
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) sand and pebbles (d) muddy water
28. 28.True or false: gravel from fine sand is done by handpicking. (a) False (b) True
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a clean glass (d) turmeric powder
31. 31.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
32. 32.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
33. 33.⚖️ 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
34. 34.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
35. 35.🫗 How do we separate gravel from fine sand? (a) winnowing (b) evaporating (c) handpicking (d) sieving
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same muddy water (c) the filter material (d) how clear the water is
38. 38.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) husk from rice grain (c) mud from water (d) gravel from fine sand
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) muddy water (d) sand and pebbles
40. 40.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed

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