Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 781 · 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.🫗 Which of these is done by winnowing? (a) salt from sea water (b) small stones from dal (c) chaff from wheat grain (d) mud from water
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
4. 4.True or false: sugar from sugar water is done by sieving. (a) True (b) False
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔮 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) it turns to sugar (d) no, salt passes through
7. 7.🛟 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
8. 8.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
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 muddy water (b) how clear the water is (c) the filter material (d) the same glass
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a magnet
12. 12.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
13. 13.🛟 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
14. 14.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) turmeric powder (d) a clean glass
17. 17.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) salt from sea water (c) bran from wheat flour (d) sugar from sugar water
18. 18.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) gravel from fine sand (c) small stones from dal (d) mud from water
19. 19.True or false: tea leaves from tea is done by filtering. (a) True (b) False
20. 20.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) a balloon (d) turmeric powder
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the same funnel (c) how clear the water is (d) the filter material
23. 23.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
25. 25.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
26. 26.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
27. 27.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
28. 28.🫗 How do we separate salt from sea water? (a) sieving (b) filtering (c) winnowing (d) evaporating
29. 29.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) hot (d) salty
30. 30.🫗 How do we separate mud from water? (a) handpicking (b) sieving (c) filtering (d) evaporating
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a mirror (d) turmeric powder
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a clean glass (c) muddy water (d) sand and pebbles
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) yeast (d) sand and pebbles
34. 34.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
35. 35.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
37. 37.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
38. 38.🫗 Which of these is done by filtering? (a) small stones from dal (b) bad grains from rice (c) chaff from wheat grain (d) tea leaves from tea
39. 39.True or false: bad grains from rice is done by handpicking. (a) False (b) True
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True

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