Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 716 · 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: a magnet is not needed for the muddy water filter. (a) False (b) True
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the same muddy water (d) the same funnel
3. 3.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🫗 Which of these is done by filtering? (a) husk from rice grain (b) chaff from wheat grain (c) tea leaves from tea (d) bad grains from rice
6. 6.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) salt from sea water
7. 7.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) muddy water (c) a magnet (d) a mirror
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a magnet (d) a clean glass
9. 9.⚖️ 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 filter material (c) the amount poured
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same funnel
11. 11.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
12. 12.⚖️ 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 filter material (c) the same muddy water
13. 13.🫗 Which of these is done by filtering? (a) salt from sea water (b) husk from rice grain (c) bad grains from rice (d) mud from water
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
15. 15.True or false: cotton or cloth 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? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
18. 18.🫗 How do we separate sugar from sugar water? (a) evaporating (b) filtering (c) winnowing (d) sieving
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a magnet (d) a battery cell
20. 20.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) cotton or cloth (d) a battery cell
23. 23.🔮 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) yes, all of it (d) it turns to sand
24. 24.🫗 How do we separate mud from water? (a) filtering (b) sieving (c) winnowing (d) handpicking
25. 25.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a funnel (d) a balloon
26. 26.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, always (d) yes, if it is cold
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) a clean glass
28. 28.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
29. 29.True or false: husk from rice grain is done by winnowing. (a) False (b) True
30. 30.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
31. 31.True or false: sugar from sugar water is done by winnowing. (a) False (b) True
32. 32.True or false: salt from sea water is done by evaporating. (a) False (b) True
33. 33.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) mud from water (d) gravel from fine sand
34. 34.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
35. 35.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
36. 36.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
37. 37.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
38. 38.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
40. 40.⚖️ 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 amount poured

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