Separating Mixtures Experiment Worksheet

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

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