Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 325 · 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.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
2. 2.🫗 Which of these is done by sieving? (a) salt from sea water (b) small stones from dal (c) mud from water (d) gravel from fine sand
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) cotton or cloth (d) a clean glass
6. 6.True or false: gravel from fine sand is done by evaporating. (a) False (b) True
7. 7.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) chaff from wheat grain (d) bad grains from rice
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
9. 9.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) tea leaves from tea (c) chaff from wheat grain (d) salt from sea water
10. 10.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
13. 13.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) tea leaves from tea (c) small stones from dal (d) sugar from sugar water
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) a battery cell (d) yeast
15. 15.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) evaporating
16. 16.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
18. 18.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) a mirror (d) a funnel
21. 21.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
22. 22.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) nothing is needed (d) lick your fingers
23. 23.True or false: bran from wheat flour is done by sieving. (a) True (b) False
24. 24.🔮 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
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) a battery cell
26. 26.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) muddy water (d) a balloon
28. 28.⚖️ 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
29. 29.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
30. 30.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
31. 31.⚖️ 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
32. 32.⚖️ 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) the same muddy water (c) how clear the water is
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) turmeric powder (c) a clean glass (d) muddy water
34. 34.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) sieving
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
36. 36.⚖️ 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 funnel (c) the filter material
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) yeast (d) sand and pebbles
38. 38.⚖️ 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 change it (c) we measure it
39. 39.⚖️ 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) how clear the water is (c) the same muddy water (d) the same glass
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a clean glass (d) yeast

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