Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 110 · 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? True or false: the filter material is the one thing we change. (a) True (b) False
2. 2.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
3. 3.🫗 How do we separate salt from sea water? (a) handpicking (b) winnowing (c) evaporating (d) filtering
4. 4.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a mirror (d) a clean glass
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) how clear the water is (d) the filter material
7. 7.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
8. 8.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) filtering (d) handpicking
9. 9.🫗 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
10. 10.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.🫗 Which of these is done by winnowing? (a) small stones from dal (b) chaff from wheat grain (c) bad grains from rice (d) salt from sea water
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) a clean glass (d) muddy water
14. 14.🫗 How do we separate small stones from dal? (a) filtering (b) sieving (c) handpicking (d) evaporating
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a mirror (d) a funnel
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) cotton or cloth (d) muddy water
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
19. 19.True or false: bad grains from rice is done by handpicking. (a) False (b) True
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a funnel (c) muddy water (d) cotton or cloth
21. 21.⚖️ 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) the same funnel (c) the same glass (d) the filter material
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
23. 23.🫗 How do we separate bran from wheat flour? (a) evaporating (b) sieving (c) filtering (d) handpicking
24. 24.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) bran from wheat flour (c) sugar from sugar water (d) small stones from dal
25. 25.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) cotton or cloth (d) a mirror
26. 26.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) sand and pebbles (d) a clean glass
28. 28.🫗 How do we separate bad grains from rice? (a) evaporating (b) handpicking (c) filtering (d) sieving
29. 29.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
30. 30.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
32. 32.⚖️ 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 filter material (c) the same muddy water
33. 33.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
34. 34.🫗 How do we separate mud from water? (a) evaporating (b) sieving (c) handpicking (d) filtering
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) sand and pebbles (c) a funnel (d) muddy water
36. 36.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
38. 38.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) turmeric powder
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) a clean glass (d) a funnel

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