Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 67 · 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.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
4. 4.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
5. 5.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the same funnel
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) a funnel (d) sand and pebbles
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a clean glass (d) a magnet
12. 12.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) chaff from wheat grain (c) bad grains from rice (d) husk from rice grain
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
14. 14.🫗 How do we separate salt from sea water? (a) sieving (b) winnowing (c) evaporating (d) filtering
15. 15.⚖️ 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
16. 16.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
17. 17.True or false: small stones from dal is done by handpicking. (a) False (b) True
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
19. 19.True or false: chaff from wheat grain is done by evaporating. (a) True (b) False
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) sand and pebbles (d) a clean glass
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) a balloon (d) muddy water
22. 22.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
23. 23.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
24. 24.⚖️ 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 glass (c) how clear the water is (d) the amount poured
25. 25.⚖️ 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
26. 26.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
27. 27.⚖️ 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 measure it (c) we change it
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a mirror
29. 29.🫗 Which of these is done by filtering? (a) mud from water (b) small stones from dal (c) bad grains from rice (d) salt from sea water
30. 30.True or false: husk from rice grain is done by winnowing. (a) True (b) False
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
32. 32.True or false: gravel from fine sand is done by sieving. (a) False (b) True
33. 33.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) yeast (c) a funnel (d) a clean glass
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) sieving (d) winnowing
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a magnet (d) cotton or cloth
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) muddy water (d) yeast
39. 39.🔍 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 dissolves (d) it turns to sand
40. 40.🛟 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

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