Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 497 · 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.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a balloon (d) sand and pebbles
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
4. 4.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) a clean glass (d) sand and pebbles
6. 6.⚖️ 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) False (b) True
7. 7.True or false: a mirror 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? Which of these is what we measure? (a) the same glass (b) the same funnel (c) how clear the water is (d) the filter material
9. 9.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) sieving (d) evaporating
10. 10.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
12. 12.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
13. 13.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) salt from sea water (c) bad grains from rice (d) bran from wheat flour
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
15. 15.🫗 Which of these is done by filtering? (a) mud from water (b) bran from wheat flour (c) husk from rice grain (d) gravel from fine sand
16. 16.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
17. 17.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🔮 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
20. 20.⚖️ 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) the same glass (d) the same funnel
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
22. 22.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) tea leaves from tea (c) chaff from wheat grain (d) sugar from sugar water
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
24. 24.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) yeast (d) a magnet
26. 26.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) cotton or cloth (d) turmeric powder
28. 28.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) tea leaves from tea (c) gravel from fine sand (d) salt from sea water
29. 29.True or false: cotton or cloth is not needed for the muddy water filter. (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) sand and pebbles (c) cotton or cloth (d) a magnet
31. 31.⚖️ 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
32. 32.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
33. 33.True or false: yeast is needed for the muddy water filter. (a) False (b) True
34. 34.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
35. 35.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) chaff from wheat grain (c) tea leaves from tea (d) mud from water
36. 36.🫗 Which of these is done by filtering? (a) salt from sea water (b) chaff from wheat grain (c) bran from wheat flour (d) tea leaves from tea
37. 37.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
38. 38.True or false: bad grains from rice is done by handpicking. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚖️ 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

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