Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 725 · 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 cotton or cloth for the muddy water filter? (a) not needed (b) needed
2. 2.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
3. 3.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
4. 4.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bad grains from rice (c) husk from rice grain (d) sugar from sugar water
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a funnel (d) a battery cell
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a balloon (d) a funnel
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) cotton or cloth (c) a clean glass (d) muddy water
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a magnet (d) cotton or cloth
9. 9.⚖️ 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
10. 10.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
12. 12.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
13. 13.True or false: salt from sea water is done by winnowing. (a) True (b) False
14. 14.⚖️ 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
15. 15.True or false: salt from sea water is done by evaporating. (a) False (b) True
16. 16.⚖️ 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
17. 17.True or false: tea leaves from tea is done by filtering. (a) True (b) False
18. 18.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
19. 19.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) sand and pebbles
22. 22.⚖️ 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 glass (c) the filter material
23. 23.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
24. 24.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
25. 25.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it floats on top (d) it sinks to the bottom
26. 26.🔮 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
27. 27.🫗 How do we separate sugar from sugar water? (a) sieving (b) handpicking (c) filtering (d) evaporating
28. 28.⚖️ 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
29. 29.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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 muddy water (c) how clear the water is (d) the same glass
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a battery cell (d) a funnel
34. 34.🫗 How do we separate small stones from dal? (a) evaporating (b) handpicking (c) winnowing (d) sieving
35. 35.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) sieving (d) filtering
36. 36.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
37. 37.True or false: bad grains from rice is done by filtering. (a) False (b) True
38. 38.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: salt from sea water is done by handpicking. (a) False (b) True
40. 40.True or false: small stones from dal is done by evaporating. (a) True (b) False

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