Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 200 · 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 cotton or cloth for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
4. 4.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
5. 5.⚖️ 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 same funnel (c) how clear the water is (d) the same muddy water
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) a mirror (d) a funnel
7. 7.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) small stones from dal (d) bran from wheat flour
8. 8.True or false: mud from water is done by handpicking. (a) True (b) False
9. 9.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
10. 10.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
11. 11.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
12. 12.🫗 How do we separate bran from wheat flour? (a) sieving (b) filtering (c) evaporating (d) winnowing
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
14. 14.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) sand and pebbles (d) a clean glass
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
17. 17.True or false: mud from water is done by filtering. (a) True (b) False
18. 18.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
19. 19.🫗 Which of these is done by winnowing? (a) small stones from dal (b) sugar from sugar water (c) gravel from fine sand (d) husk from rice grain
20. 20.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) handpicking (d) sieving
21. 21.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) chaff from wheat grain (c) small stones from dal (d) tea leaves from tea
22. 22.🫗 Which of these is done by filtering? (a) husk from rice grain (b) small stones from dal (c) bran from wheat flour (d) mud from water
23. 23.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
24. 24.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
25. 25.⚖️ 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
26. 26.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) tea leaves from tea
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.⚖️ 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
29. 29.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it dissolves (d) it turns to sand
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) a funnel (d) muddy water
34. 34.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
35. 35.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
36. 36.True or false: bran from wheat flour is done by winnowing. (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 filter material”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) muddy water (d) a mirror
39. 39.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
40. 40.True or false: mud from water is done by evaporating. (a) False (b) True

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