Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 731 · 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.🫗 How do we separate salt from sea water? (a) filtering (b) winnowing (c) evaporating (d) handpicking
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a funnel (d) a mirror
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
4. 4.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
5. 5.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) cotton or cloth (d) turmeric powder
8. 8.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
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.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
11. 11.🫗 Which of these is done by filtering? (a) bad grains from rice (b) tea leaves from tea (c) bran from wheat flour (d) salt from sea water
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a magnet (d) a clean glass
13. 13.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
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) the amount poured (c) how clear the water is
15. 15.🫗 Which of these is done by evaporating? (a) mud from water (b) small stones from dal (c) tea leaves from tea (d) salt from sea water
16. 16.⚖️ 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
17. 17.True or false: bad grains from rice is done by evaporating. (a) False (b) True
18. 18.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
19. 19.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
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 same funnel (c) the amount poured (d) how clear the water is
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) turmeric powder (d) muddy water
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
23. 23.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) evaporating (d) winnowing
24. 24.True or false: husk from rice grain is done by sieving. (a) False (b) True
25. 25.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, always (d) yes, if it is clear
26. 26.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
27. 27.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
28. 28.True or false: bran from wheat flour is done by winnowing. (a) True (b) False
29. 29.True or false: mud from water is done by sieving. (a) True (b) False
30. 30.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) bran from wheat flour (c) tea leaves from tea (d) husk from rice grain
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
33. 33.True or false: bran from wheat flour is done by sieving. (a) True (b) False
34. 34.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) yeast (d) muddy water
37. 37.True or false: bad grains from rice is done by handpicking. (a) False (b) True
38. 38.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) cotton or cloth (d) a mirror
39. 39.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
40. 40.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False

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