Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 459 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a balloon (c) a funnel (d) cotton or cloth
3. 3.⚖️ 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
4. 4.🫗 How do we separate small stones from dal? (a) sieving (b) handpicking (c) winnowing (d) evaporating
5. 5.True or false: bad grains from rice is done by handpicking. (a) False (b) True
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same glass (c) the filter material
7. 7.🫗 Which of these is done by evaporating? (a) salt from sea water (b) chaff from wheat grain (c) small stones from dal (d) bad grains from rice
8. 8.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same glass (c) how clear the water is (d) the amount poured
10. 10.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
11. 11.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a balloon (d) a clean glass
12. 12.⚖️ 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) the same muddy water (c) how clear the water is (d) the same glass
13. 13.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) sand and pebbles (d) a balloon
16. 16.True or false: tea leaves from tea is done by filtering. (a) False (b) True
17. 17.🔮 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
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
20. 20.🫗 How do we separate bad grains from rice? (a) handpicking (b) filtering (c) winnowing (d) evaporating
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) muddy water (d) a battery cell
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a funnel (d) yeast
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
24. 24.⚖️ 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
25. 25.🛟 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
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
28. 28.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
29. 29.True or false: small stones from dal is done by filtering. (a) False (b) True
30. 30.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
31. 31.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
32. 32.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
33. 33.🫗 How do we separate salt from sea water? (a) evaporating (b) filtering (c) winnowing (d) handpicking
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a clean glass (d) turmeric powder
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) muddy water (d) sand and pebbles
36. 36.🫗 Which of these is done by sieving? (a) salt from sea water (b) bad grains from rice (c) mud from water (d) gravel from fine sand
37. 37.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) evaporating (c) sieving (d) filtering
38. 38.True or false: bran from wheat flour is done by sieving. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
40. 40.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) yeast (d) a magnet

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