Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 560 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a magnet
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) sand and pebbles (d) a clean glass
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
6. 6.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
7. 7.⚖️ 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
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
10. 10.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) mud from water (c) husk from rice grain (d) gravel from fine sand
11. 11.True or false: yeast is not 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.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
14. 14.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
15. 15.True or false: yeast is needed for the muddy water filter. (a) True (b) False
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same funnel (c) the filter material
18. 18.⚖️ 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
19. 19.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) yeast (d) sand and pebbles
21. 21.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
22. 22.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
23. 23.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
24. 24.🫗 How do we separate husk from rice grain? (a) sieving (b) winnowing (c) handpicking (d) evaporating
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a battery cell
26. 26.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
27. 27.⚖️ 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 same muddy water (c) the same glass (d) the filter material
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a battery cell (d) cotton or cloth
29. 29.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
30. 30.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) bad grains from rice (c) small stones from dal (d) tea leaves from tea
31. 31.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) bran from wheat flour (c) tea leaves from tea (d) salt from sea water
32. 32.🫗 How do we separate salt from sea water? (a) winnowing (b) filtering (c) sieving (d) evaporating
33. 33.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
34. 34.🫗 How do we separate sugar from sugar water? (a) handpicking (b) evaporating (c) sieving (d) winnowing
35. 35.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a mirror (d) yeast
36. 36.⚖️ 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
37. 37.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
38. 38.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
40. 40.True or false: mud from water is done by filtering. (a) False (b) True

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