Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 262 · 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 amount poured is kept the same. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) sand and pebbles (d) a funnel
4. 4.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
5. 5.🫗 How do we separate gravel from fine sand? (a) evaporating (b) winnowing (c) filtering (d) sieving
6. 6.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
7. 7.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) leaves stay behind (d) tea stays behind
10. 10.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
11. 11.⚖️ 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
12. 12.🫗 How do we separate salt from sea water? (a) winnowing (b) handpicking (c) evaporating (d) filtering
13. 13.⚖️ 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) the filter material (d) how clear the water is
14. 14.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) winnowing (d) filtering
15. 15.🫗 Which of these is done by sieving? (a) husk from rice grain (b) salt from sea water (c) gravel from fine sand (d) tea leaves from tea
16. 16.🫗 How do we separate bran from wheat flour? (a) filtering (b) evaporating (c) sieving (d) handpicking
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) a clean glass (d) cotton or cloth
18. 18.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a mirror (d) a funnel
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) sand and pebbles (d) turmeric powder
20. 20.🧺 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 magnet (d) muddy water
21. 21.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) gravel from fine sand (c) sugar from sugar water (d) tea leaves from tea
22. 22.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
23. 23.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) cotton or cloth (d) a magnet
25. 25.True or false: husk from rice grain is done by winnowing. (a) False (b) True
26. 26.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
27. 27.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) mud from water (d) gravel from fine sand
28. 28.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) mud from water (c) small stones from dal (d) tea leaves from tea
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) turmeric powder (d) cotton or cloth
31. 31.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
32. 32.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
33. 33.True or false: bran from wheat flour is done by sieving. (a) True (b) False
34. 34.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
35. 35.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
38. 38.🫗 How do we separate small stones from dal? (a) handpicking (b) winnowing (c) sieving (d) evaporating
39. 39.True or false: bad grains from rice is done by handpicking. (a) True (b) False
40. 40.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) winnowing (d) evaporating

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