Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 447 · 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 muddy water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a battery cell
4. 4.True or false: yeast is needed for the muddy water filter. (a) True (b) False
5. 5.⚖️ 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) the filter material (c) how clear the water is
6. 6.🫗 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
7. 7.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
9. 9.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
10. 10.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
11. 11.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) filtering (d) winnowing
12. 12.⚖️ 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 amount poured (c) how clear the water is (d) the filter material
13. 13.🧺 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) a mirror
14. 14.🛟 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
15. 15.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a funnel (d) a clean glass
17. 17.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
18. 18.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) salt from sea water (c) bad grains from rice (d) chaff from wheat grain
19. 19.True or false: bran from wheat flour is done by winnowing. (a) True (b) False
20. 20.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a balloon (d) yeast
21. 21.⚖️ 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 glass (c) the filter material
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) cotton or cloth (d) muddy water
23. 23.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) cotton or cloth (d) yeast
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
25. 25.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
26. 26.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
27. 27.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) a clean glass (d) sand and pebbles
29. 29.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) handpicking (d) filtering
30. 30.⚖️ 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) how clear the water is (c) the same funnel (d) the filter material
31. 31.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
32. 32.⚖️ 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) True (b) False
33. 33.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) handpicking (d) filtering
34. 34.⚖️ 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) False (b) True
35. 35.🫗 Which of these is done by handpicking? (a) small stones from dal (b) chaff from wheat grain (c) tea leaves from tea (d) salt from sea water
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a battery cell (d) sand and pebbles
37. 37.True or false: tea leaves from tea is done by filtering. (a) True (b) False
38. 38.True or false: small stones from dal is done by evaporating. (a) True (b) False
39. 39.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) cotton or cloth (d) a mirror

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