Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 714 · 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 same muddy water is kept the same. (a) False (b) True
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a clean glass (d) yeast
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) a clean glass (d) a funnel
4. 4.True or false: gravel from fine sand is done by winnowing. (a) False (b) True
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
6. 6.⚖️ 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) the same glass (c) how clear the water is
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a mirror (c) a funnel (d) muddy water
8. 8.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) sugar from sugar water (c) chaff from wheat grain (d) gravel from fine sand
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
10. 10.🛟 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
11. 11.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) sieving (d) filtering
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) turmeric powder (d) sand and pebbles
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.True or false: bad grains from rice is done by filtering. (a) True (b) False
15. 15.🔮 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
16. 16.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
17. 17.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same muddy water (c) how clear the water is (d) the same glass
20. 20.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) tea leaves from tea (c) chaff from wheat grain (d) salt from sea water
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) evaporating (d) filtering
23. 23.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
24. 24.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
25. 25.⚖️ 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 filter material (c) how clear the water is (d) the same funnel
26. 26.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
27. 27.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
28. 28.True or false: salt from sea water is done by handpicking. (a) True (b) False
29. 29.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
31. 31.True or false: sugar from sugar water is done by sieving. (a) True (b) False
32. 32.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
33. 33.⚖️ 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
34. 34.🫗 Which of these is done by handpicking? (a) salt from sea water (b) bad grains from rice (c) bran from wheat flour (d) chaff from wheat grain
35. 35.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
36. 36.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) sieving (d) filtering
37. 37.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
38. 38.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: husk from rice grain is done by winnowing. (a) False (b) True
40. 40.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) filtering

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