Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 743 · 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? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the filter material
2. 2.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
3. 3.🔮 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) yes, all of it (d) it turns to sand
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
5. 5.🫗 Which of these is done by winnowing? (a) salt from sea water (b) tea leaves from tea (c) husk from rice grain (d) bad grains from rice
6. 6.🫗 How do we separate chaff from wheat grain? (a) sieving (b) filtering (c) winnowing (d) handpicking
7. 7.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) sand and pebbles (d) a funnel
9. 9.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
10. 10.🔍 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
11. 11.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a battery cell (d) a clean glass
12. 12.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) sieving (d) handpicking
13. 13.True or false: mud from water is done by filtering. (a) False (b) True
14. 14.True or false: small stones from dal is done by sieving. (a) True (b) False
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a balloon (d) sand and pebbles
16. 16.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same glass (c) how clear the water is (d) the filter material
18. 18.🫗 Which of these is done by sieving? (a) mud from water (b) bad grains from rice (c) gravel from fine sand (d) chaff from wheat grain
19. 19.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) small stones from dal (c) chaff from wheat grain (d) mud from water
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a clean glass (d) a battery cell
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) a funnel (d) cotton or cloth
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a balloon
23. 23.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
24. 24.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) wipe hands on face (d) lick your fingers
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a mirror (c) muddy water (d) a clean glass
27. 27.True or false: gravel from fine sand is done by sieving. (a) False (b) True
28. 28.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
29. 29.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
31. 31.⚖️ 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
32. 32.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) tea leaves from tea (c) gravel from fine sand (d) salt from sea water
33. 33.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
34. 34.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
35. 35.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a magnet (d) cotton or cloth
37. 37.⚖️ 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
38. 38.True or false: husk from rice grain is done by winnowing. (a) False (b) True
39. 39.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
40. 40.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True

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