Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 317 · 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 salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
2. 2.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) small stones from dal (c) gravel from fine sand (d) husk from rice grain
3. 3.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
4. 4.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
6. 6.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
7. 7.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
8. 8.🫗 How do we separate tea leaves from tea? (a) handpicking (b) sieving (c) evaporating (d) filtering
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
10. 10.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) turmeric powder (d) a magnet
12. 12.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) filtering (c) handpicking (d) sieving
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
14. 14.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
15. 15.True or false: husk from rice grain is done by winnowing. (a) False (b) True
16. 16.🫗 How do we separate bran from wheat flour? (a) winnowing (b) sieving (c) filtering (d) evaporating
17. 17.🔮 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
18. 18.🧺 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) muddy water
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
20. 20.⚖️ 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 filter material (c) the same funnel
21. 21.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
22. 22.True or false: small stones from dal is done by sieving. (a) True (b) False
23. 23.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) small stones from dal (c) salt from sea water (d) sugar from sugar water
24. 24.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) husk from rice grain (c) mud from water (d) salt from sea water
25. 25.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
26. 26.🫗 Which of these is done by winnowing? (a) mud from water (b) husk from rice grain (c) small stones from dal (d) tea leaves from tea
27. 27.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) sand and pebbles (d) turmeric powder
30. 30.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
31. 31.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
32. 32.⚖️ 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 filter material (c) the same glass
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a magnet (d) a funnel
34. 34.⚖️ 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
35. 35.🫗 How do we separate small stones from dal? (a) sieving (b) handpicking (c) evaporating (d) winnowing
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) a clean glass (d) sand and pebbles
37. 37.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
38. 38.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) turmeric powder (d) a clean glass

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