Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 603 · 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? What do we do with “how clear the water is”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it dissolves (d) it sinks to the bottom
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
5. 5.🫗 Which of these is done by evaporating? (a) small stones from dal (b) mud from water (c) husk from rice grain (d) salt from sea water
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) a clean glass
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 amount poured (b) how clear the water is (c) the same glass (d) the filter material
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a battery cell (d) cotton or cloth
9. 9.🫗 Which of these is done by winnowing? (a) mud from water (b) sugar from sugar water (c) husk from rice grain (d) gravel from fine sand
10. 10.True or false: yeast is needed for the muddy water filter. (a) True (b) False
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
12. 12.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
14. 14.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
15. 15.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
16. 16.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) filtering (d) handpicking
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) muddy water (d) yeast
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
19. 19.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
20. 20.🫗 Which of these is done by filtering? (a) salt from sea water (b) small stones from dal (c) chaff from wheat grain (d) tea leaves from tea
21. 21.⚖️ 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 amount poured (c) the filter material (d) the same glass
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) muddy water (d) cotton or cloth
23. 23.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bran from wheat flour (c) small stones from dal (d) salt from sea water
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) muddy water (d) cotton or cloth
25. 25.🫗 How do we separate husk from rice grain? (a) winnowing (b) sieving (c) handpicking (d) filtering
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
27. 27.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a balloon (c) a battery cell (d) a magnet
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
29. 29.🫗 How do we separate small stones from dal? (a) filtering (b) winnowing (c) handpicking (d) evaporating
30. 30.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
31. 31.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
34. 34.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ 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
38. 38.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) filtering (c) winnowing (d) sieving
39. 39.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True

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