Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 581 · 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? True or false: the same muddy water is kept the same. (a) True (b) False
2. 2.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) sand and pebbles (d) a funnel
4. 4.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
5. 5.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
6. 6.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) husk from rice grain (c) gravel from fine sand (d) bad grains from rice
7. 7.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
8. 8.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) sieving
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
10. 10.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
11. 11.🫗 How do we separate bran from wheat flour? (a) evaporating (b) winnowing (c) handpicking (d) sieving
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) a clean glass (d) a funnel
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) chaff from wheat grain (c) mud from water (d) husk from rice grain
16. 16.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) mud from water (c) chaff from wheat grain (d) small stones from dal
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) the same glass (d) how clear the water is
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) muddy water (d) cotton or cloth
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) sand and pebbles (c) turmeric powder (d) a balloon
24. 24.True or false: gravel from fine sand is done by filtering. (a) True (b) False
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) muddy water (d) a funnel
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the salt (d) the water
27. 27.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) muddy water (c) a funnel (d) a clean glass
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) muddy water (d) turmeric powder
34. 34.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
35. 35.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
36. 36.True or false: tea leaves from tea is done by filtering. (a) False (b) True
37. 37.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ 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 glass (b) the same muddy water (c) the filter material (d) the same funnel
39. 39.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) sieving (d) evaporating
40. 40.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed

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