Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 303 · 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.True or false: bran from wheat flour is done by filtering. (a) True (b) False
2. 2.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a mirror (d) a clean glass
6. 6.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) chaff from wheat grain (c) salt from sea water (d) small stones from dal
7. 7.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) it turns to sand (d) yes, all of it
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) yeast (d) a funnel
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
10. 10.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
12. 12.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
13. 13.🫗 Which of these is done by filtering? (a) mud from water (b) bran from wheat flour (c) chaff from wheat grain (d) gravel from fine sand
14. 14.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
16. 16.🫗 Which of these is done by evaporating? (a) mud from water (b) sugar from sugar water (c) chaff from wheat grain (d) bran from wheat flour
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) yeast
18. 18.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) muddy water (d) a funnel
20. 20.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) bad grains from rice (c) chaff from wheat grain (d) mud from water
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) cotton or cloth (d) a funnel
24. 24.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
25. 25.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a magnet (d) turmeric powder
26. 26.🔮 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same funnel (c) the filter material (d) the same muddy water
28. 28.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🫗 How do we separate sugar from sugar water? (a) sieving (b) filtering (c) evaporating (d) winnowing
31. 31.True or false: sugar from sugar water is done by sieving. (a) True (b) False
32. 32.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
33. 33.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
34. 34.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a mirror
37. 37.🫗 How do we separate bad grains from rice? (a) filtering (b) handpicking (c) winnowing (d) evaporating
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) a clean glass (d) sand and pebbles
39. 39.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) tea leaves from tea (d) sugar from sugar water
40. 40.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) tea leaves from tea (c) salt from sea water (d) mud from water

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