Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 930 · 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? Which of these is kept the same? (a) the filter material (b) the amount poured (c) how clear the water is
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) sand and pebbles (d) muddy water
3. 3.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
4. 4.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) yes, all of it (d) it turns to sugar
6. 6.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a funnel (d) a mirror
8. 8.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
9. 9.True or false: bran from wheat flour is done by sieving. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the same glass (c) the amount poured (d) the filter material
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🫗 Which of these is done by winnowing? (a) salt from sea water (b) bran from wheat flour (c) small stones from dal (d) chaff from wheat grain
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a balloon (d) a clean glass
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) a battery cell (d) a mirror
16. 16.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
17. 17.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
18. 18.⚖️ 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) True (b) False
19. 19.🔮 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
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) turmeric powder (d) sand and pebbles
21. 21.True or false: bad grains from rice is done by handpicking. (a) False (b) True
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.True or false: mud from water is done by evaporating. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: gravel from fine sand is done by sieving. (a) False (b) True
26. 26.🫗 Which of these is done by sieving? (a) mud from water (b) husk from rice grain (c) sugar from sugar water (d) bran from wheat flour
27. 27.⚖️ 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 filter material (c) the same muddy water (d) how clear the water is
28. 28.🛟 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
29. 29.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
31. 31.⚖️ 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 change it (c) we measure it
32. 32.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
34. 34.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
35. 35.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) a battery cell (d) a clean glass
36. 36.⚖️ 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
37. 37.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
38. 38.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) filtering (d) handpicking
39. 39.⚖️ 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
40. 40.🫗 How do we separate salt from sea water? (a) sieving (b) filtering (c) evaporating (d) handpicking

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