Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 336 · 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.🫗 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
2. 2.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) muddy water (d) cotton or cloth
4. 4.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
5. 5.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🛟 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
8. 8.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) a balloon (d) cotton or cloth
10. 10.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.True or false: husk from rice grain is done by winnowing. (a) False (b) True
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: sugar from sugar water is done by evaporating. (a) True (b) False
15. 15.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) filtering (c) evaporating (d) sieving
16. 16.True or false: yeast is needed for the muddy water filter. (a) False (b) True
17. 17.True or false: small stones from dal is done by winnowing. (a) True (b) False
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a funnel (d) a clean glass
19. 19.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same funnel
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
22. 22.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
24. 24.⚖️ 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
25. 25.True or false: mud from water is done by handpicking. (a) True (b) False
26. 26.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) no, salt passes through (d) yes, all of it
27. 27.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) chaff from wheat grain (c) husk from rice grain (d) sugar from sugar water
28. 28.True or false: bad grains from rice is done by winnowing. (a) False (b) True
29. 29.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) sugar from sugar water (c) chaff from wheat grain (d) small stones from dal
30. 30.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
31. 31.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) husk from rice grain (c) chaff from wheat grain (d) bran from wheat flour
32. 32.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a mirror (d) a funnel
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) turmeric powder (d) cotton or cloth
40. 40.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False

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