Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 569 · 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? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🔮 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) it turns to sugar (d) yes, all of it
4. 4.True or false: husk from rice grain is done by winnowing. (a) True (b) False
5. 5.🫗 Which of these is done by handpicking? (a) mud from water (b) tea leaves from tea (c) bad grains from rice (d) chaff from wheat grain
6. 6.🛟 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
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
8. 8.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the same glass (d) the same muddy water
10. 10.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
11. 11.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
12. 12.🔮 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
13. 13.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) winnowing (d) filtering
14. 14.🧺 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
15. 15.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) winnowing (d) evaporating
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) a magnet (d) muddy water
20. 20.⚖️ 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
21. 21.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) evaporating (d) sieving
22. 22.🔍 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
23. 23.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, always (d) yes, if it is clear
24. 24.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same muddy water (c) the filter material (d) the same funnel
26. 26.⚖️ 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 measure it (c) we change it
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) muddy water (d) sand and pebbles
29. 29.True or false: husk from rice grain is done by sieving. (a) True (b) False
30. 30.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
31. 31.🫗 Which of these is done by filtering? (a) bad grains from rice (b) bran from wheat flour (c) sugar from sugar water (d) mud from water
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a magnet (d) sand and pebbles
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a funnel (d) a magnet
34. 34.🧺 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 funnel (d) a battery cell
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) cotton or cloth (d) muddy water
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) cotton or cloth (d) muddy water
38. 38.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a clean glass (d) yeast

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