Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 833 · 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 turmeric powder for the muddy water filter? (a) needed (b) not needed
2. 2.🫗 How do we separate bran from wheat flour? (a) winnowing (b) filtering (c) evaporating (d) sieving
3. 3.🔮 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) yes, all of it (d) it turns to sugar
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) muddy water (d) yeast
5. 5.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
6. 6.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
7. 7.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) muddy water (d) yeast
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) turmeric powder (d) yeast
11. 11.🔮 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
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a magnet (d) cotton or cloth
13. 13.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a magnet (c) muddy water (d) a funnel
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same glass (c) how clear the water is (d) the amount poured
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) yeast
17. 17.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
18. 18.⚖️ 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 change it (c) we measure it
19. 19.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
20. 20.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a balloon
23. 23.🫗 Which of these is done by sieving? (a) bad grains from rice (b) bran from wheat flour (c) sugar from sugar water (d) salt from sea water
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🫗 How do we separate bad grains from rice? (a) winnowing (b) handpicking (c) filtering (d) sieving
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
29. 29.True or false: small stones from dal is done by handpicking. (a) False (b) True
30. 30.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
31. 31.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) winnowing (d) filtering
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) a funnel (d) sand and pebbles
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ 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
37. 37.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) sand and pebbles (d) muddy water
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
40. 40.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True

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