Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 408 · 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 what we measure? (a) the filter material (b) the amount poured (c) the same funnel (d) how clear the water is
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ 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
5. 5.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
6. 6.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a battery cell (d) a clean glass
9. 9.🔮 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
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) a magnet (d) cotton or cloth
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a magnet
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) muddy water
14. 14.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter traps mud (d) the filter adds soap
15. 15.True or false: mud from water is done by filtering. (a) False (b) True
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
17. 17.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 How do we separate sugar from sugar water? (a) sieving (b) evaporating (c) winnowing (d) handpicking
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) sand and pebbles (d) a balloon
23. 23.🫗 Which of these is done by evaporating? (a) small stones from dal (b) sugar from sugar water (c) chaff from wheat grain (d) bad grains from rice
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
25. 25.True or false: bad grains from rice is done by handpicking. (a) True (b) False
26. 26.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: bran from wheat flour is done by sieving. (a) False (b) True
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a clean glass (d) cotton or cloth
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a battery cell
31. 31.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) sieving (c) handpicking (d) winnowing
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
33. 33.⚖️ 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
34. 34.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) leaves stay behind (d) tea stays behind
35. 35.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a mirror (d) yeast
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.True or false: small stones from dal is done by sieving. (a) True (b) False
39. 39.🫗 How do we separate salt from sea water? (a) winnowing (b) handpicking (c) evaporating (d) sieving
40. 40.True or false: salt from sea water is done by evaporating. (a) False (b) True

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