Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 804 · 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 muddy water for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
3. 3.True or false: bad grains from rice is done by handpicking. (a) False (b) True
4. 4.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) husk from rice grain (c) bran from wheat flour (d) bad grains from rice
5. 5.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) sieving (d) filtering
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a battery cell
7. 7.⚖️ 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
8. 8.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
9. 9.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) muddy water (d) yeast
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) cotton or cloth (d) muddy water
12. 12.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
14. 14.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
15. 15.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
16. 16.⚖️ 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
17. 17.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
18. 18.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) bran from wheat flour (c) mud from water (d) chaff from wheat grain
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
20. 20.🔍 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 dissolves (d) it floats on top
21. 21.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) chaff from wheat grain (c) mud from water (d) salt from sea water
22. 22.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a funnel (d) turmeric powder
23. 23.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
25. 25.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
26. 26.🔮 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
27. 27.⚖️ 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
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same glass (c) the same funnel (d) how clear the water is
29. 29.True or false: tea leaves from tea is done by evaporating. (a) True (b) False
30. 30.⚖️ 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) the filter material (c) how clear the water is (d) the same glass
31. 31.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
32. 32.⚖️ 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 change it (c) we measure it
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) a mirror
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) muddy water (d) yeast
36. 36.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) salt from sea water (c) gravel from fine sand (d) small stones from dal
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a funnel (c) sand and pebbles (d) cotton or cloth
38. 38.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
39. 39.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) a funnel (d) turmeric powder

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