Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 309 · 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.🔮 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
2. 2.True or false: salt from sea water is done by evaporating. (a) True (b) False
3. 3.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
4. 4.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it floats on top (d) it sinks to the bottom
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a balloon (c) a clean glass (d) cotton or cloth
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
10. 10.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
11. 11.🛟 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
12. 12.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) evaporating (d) handpicking
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a magnet
14. 14.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) a mirror (d) a battery cell
16. 16.⚖️ 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
17. 17.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
18. 18.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
19. 19.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) handpicking (d) winnowing
20. 20.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bran from wheat flour (c) gravel from fine sand (d) salt from sea water
21. 21.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
22. 22.🔮 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) no, salt passes through (d) yes, all of it
23. 23.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
24. 24.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a mirror (d) sand and pebbles
25. 25.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a magnet
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) a clean glass (d) muddy water
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) cotton or cloth (d) turmeric powder
30. 30.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
31. 31.⚖️ 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
32. 32.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
33. 33.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
36. 36.🫗 Which of these is done by sieving? (a) husk from rice grain (b) chaff from wheat grain (c) salt from sea water (d) gravel from fine sand
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.True or false: yeast is needed for the muddy water filter. (a) False (b) True
39. 39.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
40. 40.True or false: tea leaves from tea is done by filtering. (a) False (b) True

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