Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 270 · 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? Which of these is what we measure? (a) the same glass (b) the filter material (c) the same muddy water (d) how clear the water is
2. 2.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves
4. 4.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, always (d) yes, if it is clear
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
6. 6.⚖️ 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 glass (b) the same muddy water (c) how clear the water is (d) the filter material
7. 7.🫗 How do we separate salt from sea water? (a) sieving (b) handpicking (c) winnowing (d) evaporating
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
9. 9.⚖️ 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 keep it the same (c) we change it
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) sand and pebbles (c) cotton or cloth (d) a clean glass
11. 11.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
12. 12.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
13. 13.True or false: yeast is needed for the muddy water filter. (a) True (b) False
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
15. 15.True or false: tea leaves from tea is done by filtering. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a magnet (d) muddy water
18. 18.🫗 How do we separate small stones from dal? (a) evaporating (b) sieving (c) handpicking (d) filtering
19. 19.🫗 Which of these is done by filtering? (a) bad grains from rice (b) bran from wheat flour (c) tea leaves from tea (d) gravel from fine sand
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a funnel (c) cotton or cloth (d) muddy water
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) a funnel (d) sand and pebbles
23. 23.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) small stones from dal (c) tea leaves from tea (d) husk from rice grain
24. 24.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) muddy water (c) turmeric powder (d) a balloon
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a clean glass (c) muddy water (d) sand and pebbles
26. 26.🧺 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) turmeric powder
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
28. 28.🛟 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
29. 29.True or false: husk from rice grain is done by handpicking. (a) True (b) False
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
32. 32.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a mirror (c) a clean glass (d) sand and pebbles
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) cotton or cloth (c) a magnet (d) turmeric powder
35. 35.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) chaff from wheat grain (c) salt from sea water (d) bran from wheat flour
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
40. 40.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True

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