Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 723 · 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 a magnet for the muddy water filter? (a) needed (b) not needed
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
3. 3.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
4. 4.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
6. 6.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) winnowing (d) sieving
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
8. 8.True or false: yeast is needed for the muddy water filter. (a) False (b) True
9. 9.⚖️ 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
10. 10.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) sand and pebbles (d) yeast
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a funnel (d) a battery cell
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a battery cell (d) cotton or cloth
19. 19.🧺 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 magnet (d) sand and pebbles
20. 20.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) chaff from wheat grain (c) small stones from dal (d) husk from rice grain
21. 21.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a magnet (d) turmeric powder
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
24. 24.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) evaporating (d) sieving
25. 25.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ 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 amount poured
27. 27.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) handpicking (d) filtering
28. 28.True or false: mud from water is done by filtering. (a) False (b) True
29. 29.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
30. 30.🫗 How do we separate bran from wheat flour? (a) evaporating (b) handpicking (c) sieving (d) winnowing
31. 31.🫗 Which of these is done by filtering? (a) small stones from dal (b) bad grains from rice (c) mud from water (d) chaff from wheat grain
32. 32.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
33. 33.🫗 How do we separate bad grains from rice? (a) evaporating (b) handpicking (c) filtering (d) winnowing
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a clean glass (c) turmeric powder (d) a balloon
35. 35.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
36. 36.⚖️ 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
37. 37.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) how clear the water is (d) the amount poured
39. 39.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
40. 40.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True

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