Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 688 · 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.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
2. 2.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a funnel (d) a balloon
3. 3.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
4. 4.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
6. 6.⚖️ 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) True (b) False
7. 7.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) sand and pebbles (d) cotton or cloth
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) yeast (d) cotton or cloth
14. 14.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
15. 15.🫗 Which of these is done by winnowing? (a) mud from water (b) small stones from dal (c) sugar from sugar water (d) chaff from wheat grain
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
17. 17.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
18. 18.⚖️ 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
19. 19.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) mud from water (c) tea leaves from tea (d) bran from wheat flour
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
21. 21.🫗 How do we separate mud from water? (a) handpicking (b) evaporating (c) filtering (d) winnowing
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) muddy water (d) a balloon
23. 23.🫗 How do we separate small stones from dal? (a) evaporating (b) filtering (c) winnowing (d) handpicking
24. 24.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
25. 25.True or false: salt from sea water is done by evaporating. (a) True (b) False
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a balloon (d) muddy water
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the amount poured (d) the same glass
29. 29.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a clean glass (d) turmeric powder
30. 30.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a battery cell (d) sand and pebbles
32. 32.True or false: gravel from fine sand is done by sieving. (a) False (b) True
33. 33.True or false: bad grains from rice is done by handpicking. (a) False (b) True
34. 34.🫗 Which of these is done by winnowing? (a) mud from water (b) bran from wheat flour (c) sugar from sugar water (d) husk from rice grain
35. 35.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) tea leaves from tea (c) bad grains from rice (d) salt from sea water
36. 36.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
37. 37.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
38. 38.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) sieving (d) filtering
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a funnel (c) sand and pebbles (d) cotton or cloth
40. 40.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) yeast (d) a mirror

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