Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 25 · 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.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
2. 2.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
3. 3.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
4. 4.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
5. 5.🔍 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 sinks to the bottom (d) it dissolves
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) a clean glass (d) a funnel
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a funnel (d) a magnet
8. 8.True or false: gravel from fine sand is done by sieving. (a) False (b) True
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
10. 10.⚖️ 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) the same glass (c) the filter material (d) the same funnel
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
12. 12.🫗 Which of these is done by filtering? (a) mud from water (b) gravel from fine sand (c) small stones from dal (d) chaff from wheat grain
13. 13.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) a funnel (d) muddy water
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a battery cell
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a mirror (d) muddy water
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.🛟 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
22. 22.⚖️ 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 change it (c) we measure it
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a balloon (d) cotton or cloth
26. 26.🫗 How do we separate bad grains from rice? (a) filtering (b) sieving (c) handpicking (d) winnowing
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: yeast is needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) a balloon (d) a mirror
30. 30.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
31. 31.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
33. 33.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) salt from sea water (d) gravel from fine sand
34. 34.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
35. 35.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) evaporating (d) sieving
36. 36.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
37. 37.True or false: bad grains from rice is done by evaporating. (a) False (b) True
38. 38.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) tea leaves from tea (c) bran from wheat flour (d) chaff from wheat grain
39. 39.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) sand and pebbles (d) yeast

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