Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 574 · 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 the one thing we change? (a) the filter material (b) how clear the water is (c) the same glass (d) the same muddy water
2. 2.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
3. 3.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
4. 4.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) mud from water (c) chaff from wheat grain (d) sugar from sugar water
5. 5.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.⚖️ 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) False (b) True
8. 8.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) winnowing (d) evaporating
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) a mirror (d) cotton or cloth
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) a battery cell (d) muddy water
13. 13.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) a battery cell
15. 15.True or false: yeast is needed for the muddy water filter. (a) True (b) False
16. 16.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
20. 20.🫗 How do we separate salt from sea water? (a) filtering (b) evaporating (c) winnowing (d) sieving
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) cotton or cloth (d) a clean glass
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a balloon
24. 24.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) bad grains from rice (c) husk from rice grain (d) mud from water
25. 25.True or false: bran from wheat flour is done by filtering. (a) False (b) True
26. 26.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) tea leaves from tea (c) mud from water (d) gravel from fine sand
27. 27.True or false: husk from rice grain is done by filtering. (a) False (b) True
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
29. 29.⚖️ 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 measure it (c) we keep it the same
30. 30.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
31. 31.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) bad grains from rice (d) small stones from dal
32. 32.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
33. 33.🫗 Which of these is done by filtering? (a) bad grains from rice (b) small stones from dal (c) mud from water (d) sugar from sugar water
34. 34.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
35. 35.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) evaporating (d) sieving
36. 36.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) yeast (d) a magnet
39. 39.🫗 How do we separate bran from wheat flour? (a) evaporating (b) filtering (c) handpicking (d) sieving
40. 40.⚖️ 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

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