Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 49 · 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 mirror for the muddy water filter? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a mirror (d) a clean glass
7. 7.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) turmeric powder (d) a clean glass
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) yeast (d) sand and pebbles
9. 9.⚖️ 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 glass (b) the same muddy water (c) the filter material (d) how clear the water is
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) a balloon
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a magnet
12. 12.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a funnel (d) a magnet
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
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 keep it the same (b) we measure it (c) we change it
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) muddy water (d) a funnel
19. 19.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) chaff from wheat grain (c) husk from rice grain (d) mud from water
20. 20.True or false: small stones from dal is done by winnowing. (a) False (b) True
21. 21.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
22. 22.🔮 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
23. 23.🫗 How do we separate salt from sea water? (a) sieving (b) winnowing (c) handpicking (d) evaporating
24. 24.⚖️ 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
25. 25.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) handpicking
26. 26.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
27. 27.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) yeast (d) a balloon
29. 29.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a balloon (d) cotton or cloth
30. 30.True or false: yeast is needed for the muddy water filter. (a) False (b) True
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
32. 32.True or false: salt from sea water is done by evaporating. (a) False (b) True
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) yeast (d) a funnel
34. 34.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) small stones from dal (c) mud from water (d) husk from rice grain
35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a mirror (d) cotton or cloth
38. 38.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
39. 39.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
40. 40.⚖️ 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

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