Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 985 · 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.🛟 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
2. 2.⚖️ 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
3. 3.True or false: salt from sea water is done by evaporating. (a) True (b) False
4. 4.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) a magnet (d) a clean glass
6. 6.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
7. 7.🧺 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
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚖️ 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 amount poured
10. 10.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) small stones from dal (d) husk from rice grain
11. 11.🫗 Which of these is done by filtering? (a) bad grains from rice (b) small stones from dal (c) gravel from fine sand (d) mud from water
12. 12.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
13. 13.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
16. 16.🫗 How do we separate salt from sea water? (a) sieving (b) filtering (c) handpicking (d) evaporating
17. 17.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) filtering (d) winnowing
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) muddy water (d) yeast
19. 19.⚖️ 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) how clear the water is (c) the filter material
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the mud (d) the water
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a funnel (d) sand and pebbles
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a magnet (d) sand and pebbles
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
26. 26.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) handpicking (d) evaporating
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
29. 29.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
30. 30.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
31. 31.🔮 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
32. 32.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
33. 33.⚖️ 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
34. 34.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) sieving (d) winnowing
35. 35.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) muddy water (d) sand and pebbles
37. 37.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
38. 38.🫗 Which of these is done by handpicking? (a) small stones from dal (b) sugar from sugar water (c) gravel from fine sand (d) bran from wheat flour
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a mirror (d) sand and pebbles

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