Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 905 · 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? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
2. 2.🔮 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
3. 3.🫗 How do we separate mud from water? (a) sieving (b) handpicking (c) winnowing (d) filtering
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) yeast (d) cotton or cloth
5. 5.True or false: salt from sea water is done by filtering. (a) True (b) False
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a clean glass (c) muddy water (d) a funnel
7. 7.⚖️ 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
8. 8.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a clean glass (d) a battery cell
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
11. 11.🫗 Which of these is done by winnowing? (a) small stones from dal (b) husk from rice grain (c) bran from wheat flour (d) bad grains from rice
12. 12.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
13. 13.⚖️ 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
14. 14.⚖️ 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 muddy water
15. 15.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) cotton or cloth (c) muddy water (d) a clean glass
18. 18.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
20. 20.⚖️ 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) the amount poured (c) how clear the water is (d) the same funnel
21. 21.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) bran from wheat flour (c) gravel from fine sand (d) husk from rice grain
23. 23.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) a funnel (d) muddy water
26. 26.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
27. 27.🫗 Which of these is done by filtering? (a) small stones from dal (b) mud from water (c) bad grains from rice (d) husk from rice grain
28. 28.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
29. 29.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) turmeric powder (d) sand and pebbles
30. 30.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.⚖️ 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 amount poured
34. 34.⚖️ 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) the filter material (c) the same glass (d) how clear the water is
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a magnet (d) a funnel
36. 36.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
38. 38.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) small stones from dal (c) gravel from fine sand (d) bran from wheat flour
39. 39.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) handpicking (d) winnowing
40. 40.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) gravel from fine sand (c) tea leaves from tea (d) mud from water

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