Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 416 · 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.True or false: gravel from fine sand is done by sieving. (a) True (b) False
2. 2.⚖️ 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
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bad grains from rice (c) tea leaves from tea (d) bran from wheat flour
6. 6.🫗 Which of these is done by winnowing? (a) small stones from dal (b) chaff from wheat grain (c) bad grains from rice (d) tea leaves from tea
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 same funnel (b) the filter material (c) the same glass (d) how clear the water is
8. 8.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
9. 9.🫗 Which of these is done by filtering? (a) salt from sea water (b) small stones from dal (c) chaff from wheat grain (d) mud from water
10. 10.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) a clean glass (d) sand and pebbles
13. 13.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
14. 14.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) bad grains from rice (c) husk from rice grain (d) mud from water
15. 15.🫗 Which of these is done by evaporating? (a) mud from water (b) gravel from fine sand (c) sugar from sugar water (d) small stones from dal
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) cotton or cloth (d) turmeric powder
18. 18.🛟 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
19. 19.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
20. 20.True or false: salt from sea water is done by evaporating. (a) False (b) True
21. 21.🫗 Which of these is done by handpicking? (a) small stones from dal (b) husk from rice grain (c) bran from wheat flour (d) salt from sea water
22. 22.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
23. 23.True or false: bad grains from rice is done by sieving. (a) True (b) False
24. 24.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
25. 25.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
26. 26.True or false: mud from water is done by sieving. (a) True (b) False
27. 27.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) handpicking
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
29. 29.🔍 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
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
32. 32.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
33. 33.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
34. 34.True or false: small stones from dal is done by sieving. (a) False (b) True
35. 35.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) small stones from dal (d) tea leaves from tea
36. 36.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a balloon (d) a battery cell
37. 37.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
38. 38.⚖️ 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 funnel
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a battery cell (d) sand and pebbles
40. 40.⚖️ 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 muddy water (d) how clear the water is

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