Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 323 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) muddy water (d) a funnel
2. 2.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
3. 3.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
4. 4.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) small stones from dal (c) husk from rice grain (d) sugar from sugar water
5. 5.🫗 How do we separate mud from water? (a) evaporating (b) sieving (c) filtering (d) handpicking
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a clean glass (c) cotton or cloth (d) muddy water
7. 7.⚖️ 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
8. 8.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
9. 9.⚖️ 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
10. 10.⚖️ 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 glass (b) how clear the water is (c) the same muddy water (d) the filter material
11. 11.True or false: bran from wheat flour is done by sieving. (a) False (b) True
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: small stones from dal is done by handpicking. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
17. 17.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a magnet (d) a clean glass
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a battery cell (d) a clean glass
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
23. 23.True or false: bran from wheat flour is done by filtering. (a) True (b) False
24. 24.🔍 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
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) cotton or cloth (d) a mirror
26. 26.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
27. 27.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) mud from water (c) chaff from wheat grain (d) tea leaves from tea
28. 28.🫗 How do we separate bad grains from rice? (a) filtering (b) evaporating (c) winnowing (d) handpicking
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
30. 30.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
31. 31.True or false: salt from sea water is done by winnowing. (a) False (b) True
32. 32.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
33. 33.⚖️ 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) how clear the water is (c) the amount poured (d) the same muddy water
34. 34.⚖️ 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
35. 35.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
36. 36.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
38. 38.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a battery cell (d) a magnet
39. 39.🫗 How do we separate salt from sea water? (a) winnowing (b) filtering (c) handpicking (d) evaporating
40. 40.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) tea leaves from tea (c) gravel from fine sand (d) salt from sea water

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