Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 2 · 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.🛟 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
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) sand and pebbles (c) muddy water (d) a clean glass
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 sugar (d) it turns to sand
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
5. 5.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
6. 6.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
8. 8.🫗 How do we separate bad grains from rice? (a) winnowing (b) filtering (c) handpicking (d) evaporating
9. 9.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
10. 10.⚖️ 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
11. 11.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
12. 12.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
13. 13.🛟 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
14. 14.⚖️ 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 amount poured (c) the filter material
15. 15.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
16. 16.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) small stones from dal (c) gravel from fine sand (d) sugar from sugar water
17. 17.True or false: small stones from dal is done by handpicking. (a) False (b) True
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same funnel (c) how clear the water is (d) the filter material
19. 19.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
21. 21.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) bad grains from rice (c) small stones from dal (d) tea leaves from tea
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
26. 26.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) tea leaves from tea (c) bran from wheat flour (d) small stones from dal
27. 27.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) salt from sea water (c) small stones from dal (d) mud from water
28. 28.True or false: mud from water is done by sieving. (a) True (b) False
29. 29.True or false: bad grains from rice is done by winnowing. (a) False (b) True
30. 30.True or false: tea leaves from tea is done by sieving. (a) True (b) False
31. 31.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
33. 33.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) turmeric powder
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
37. 37.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a balloon (d) a clean glass
39. 39.True or false: husk from rice grain is done by winnowing. (a) False (b) True
40. 40.True or false: bad grains from rice is done by handpicking. (a) False (b) True

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