Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 394 · 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.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
4. 4.🫗 Which of these is done by sieving? (a) salt from sea water (b) gravel from fine sand (c) sugar from sugar water (d) tea leaves from tea
5. 5.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
6. 6.⚖️ 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 change it (c) we measure it
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) yeast (d) cotton or cloth
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
9. 9.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
11. 11.⚖️ 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
12. 12.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) cotton or cloth (d) a magnet
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a mirror (d) muddy water
15. 15.🫗 How do we separate tea leaves from tea? (a) handpicking (b) evaporating (c) sieving (d) filtering
16. 16.True or false: bran from wheat flour is done by filtering. (a) True (b) False
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
18. 18.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) bad grains from rice (c) salt from sea water (d) husk from rice grain
19. 19.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) sand and pebbles (d) a funnel
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🫗 How do we separate chaff from wheat grain? (a) filtering (b) winnowing (c) evaporating (d) sieving
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) muddy water (d) cotton or cloth
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
25. 25.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
28. 28.⚖️ 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 funnel (c) how clear the water is
29. 29.🫗 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
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) muddy water (d) cotton or cloth
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🧺 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
34. 34.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
35. 35.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
36. 36.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
37. 37.True or false: mud from water is done by handpicking. (a) True (b) False
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same muddy water (c) the filter material (d) the same funnel
39. 39.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
40. 40.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False

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