Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 380 · 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) not needed (b) needed
2. 2.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
3. 3.🫗 How do we separate husk from rice grain? (a) winnowing (b) filtering (c) sieving (d) handpicking
4. 4.⚖️ 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) the same glass (c) how clear the water is
5. 5.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) handpicking (d) filtering
6. 6.⚖️ 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 filter material (c) how clear the water is (d) the amount poured
7. 7.True or false: bad grains from rice is done by handpicking. (a) False (b) True
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
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 funnel (b) the filter material (c) how clear the water is (d) the same glass
10. 10.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
11. 11.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) mud from water (c) bran from wheat flour (d) sugar from sugar water
12. 12.🫗 How do we separate bran from wheat flour? (a) filtering (b) sieving (c) handpicking (d) evaporating
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) muddy water (d) yeast
14. 14.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) salt from sea water
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
16. 16.True or false: a funnel is not needed for the muddy water filter. (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 filter material”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) cotton or cloth (d) a clean glass
20. 20.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) a battery cell (d) a balloon
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) muddy water (d) sand and pebbles
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) a balloon (d) a clean glass
23. 23.True or false: gravel from fine sand is done by evaporating. (a) True (b) False
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
25. 25.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
26. 26.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
27. 27.⚖️ 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
28. 28.🫗 How do we separate sugar from sugar water? (a) winnowing (b) filtering (c) handpicking (d) evaporating
29. 29.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a funnel (c) yeast (d) a balloon
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 measure it (b) we keep it the same (c) we change it
33. 33.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) salt from sea water (c) bran from wheat flour (d) mud from water
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
35. 35.🫗 How do we separate small stones from dal? (a) winnowing (b) evaporating (c) sieving (d) handpicking
36. 36.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a magnet (d) a funnel
39. 39.⚖️ 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
40. 40.True or false: salt from sea water is done by winnowing. (a) True (b) False

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