Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 192 · 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 yeast for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) turmeric powder (d) a funnel
4. 4.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
5. 5.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) winnowing (d) sieving
6. 6.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same funnel (c) the same muddy water (d) how clear the water is
8. 8.⚖️ 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
9. 9.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
10. 10.⚖️ 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
11. 11.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bad grains from rice (c) small stones from dal (d) sugar from sugar water
12. 12.True or false: sugar from sugar water is done by sieving. (a) True (b) False
13. 13.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🫗 Which of these is done by sieving? (a) salt from sea water (b) chaff from wheat grain (c) sugar from sugar water (d) bran from wheat flour
16. 16.True or false: sugar from sugar water is done by evaporating. (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 same funnel”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: bad grains from rice is done by evaporating. (a) False (b) True
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
24. 24.🫗 How do we separate mud from water? (a) filtering (b) sieving (c) handpicking (d) evaporating
25. 25.True or false: yeast is needed for the muddy water filter. (a) True (b) False
26. 26.True or false: small stones from dal is done by filtering. (a) True (b) False
27. 27.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a balloon (d) a magnet
29. 29.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a mirror (d) cotton or cloth
31. 31.🫗 How do we separate tea leaves from tea? (a) winnowing (b) handpicking (c) sieving (d) filtering
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a mirror
33. 33.True or false: tea leaves from tea is done by filtering. (a) True (b) False
34. 34.⚖️ 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 muddy water (c) the filter material
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) sand and pebbles (d) cotton or cloth
36. 36.🧺 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 magnet (d) muddy water
37. 37.⚖️ 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
38. 38.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) cotton or cloth (d) a battery cell
40. 40.True or false: bran from wheat flour is done by sieving. (a) True (b) False

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