Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 183 · 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.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a balloon (d) a clean glass
3. 3.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) filtering (d) winnowing
4. 4.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
5. 5.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
6. 6.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) a clean glass (d) cotton or cloth
9. 9.True or false: bad grains from rice is done by winnowing. (a) True (b) False
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) yeast (d) muddy water
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a magnet (d) a clean glass
13. 13.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
14. 14.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
16. 16.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) sugar from sugar water (c) gravel from fine sand (d) bran from wheat flour
17. 17.⚖️ 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
18. 18.⚖️ 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 muddy water (b) how clear the water is (c) the same funnel (d) the filter material
19. 19.🔍 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
20. 20.True or false: small stones from dal is done by winnowing. (a) True (b) False
21. 21.True or false: small stones from dal is done by handpicking. (a) True (b) False
22. 22.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) sand and pebbles (d) a mirror
24. 24.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
25. 25.⚖️ 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
26. 26.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a battery cell
28. 28.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) a battery cell (d) cotton or cloth
29. 29.True or false: bad grains from rice is done by handpicking. (a) True (b) False
30. 30.True or false: husk from rice grain is done by winnowing. (a) False (b) True
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
36. 36.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
37. 37.🫗 Which of these is done by sieving? (a) bad grains from rice (b) bran from wheat flour (c) salt from sea water (d) sugar from sugar water
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🫗 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

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