Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 98 · 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.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
2. 2.⚖️ 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 muddy water (c) the same glass (d) how clear the water is
3. 3.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
4. 4.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
6. 6.🫗 Which of these is done by evaporating? (a) salt from sea water (b) gravel from fine sand (c) small stones from dal (d) bad grains from rice
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
8. 8.🔮 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
9. 9.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) filtering (d) winnowing
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a magnet (d) muddy water
12. 12.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
13. 13.🛟 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
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🫗 How do we separate mud from water? (a) handpicking (b) sieving (c) filtering (d) winnowing
16. 16.🫗 How do we separate tea leaves from tea? (a) handpicking (b) winnowing (c) filtering (d) evaporating
17. 17.🫗 How do we separate bran from wheat flour? (a) evaporating (b) handpicking (c) winnowing (d) sieving
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
19. 19.⚖️ 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 amount poured (c) how clear the water is
20. 20.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a mirror (d) a funnel
21. 21.True or false: yeast is needed for the muddy water filter. (a) False (b) True
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a balloon (d) a funnel
24. 24.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) chaff from wheat grain (c) sugar from sugar water (d) bad grains from rice
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) a funnel (d) cotton or cloth
26. 26.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same funnel (c) the filter material
28. 28.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
29. 29.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
30. 30.True or false: tea leaves from tea is done by filtering. (a) False (b) True
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) a funnel (d) cotton or cloth
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🫗 Which of these is done by filtering? (a) mud from water (b) small stones from dal (c) bran from wheat flour (d) husk from rice grain
34. 34.True or false: bad grains from rice is done by evaporating. (a) False (b) True
35. 35.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
36. 36.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) gravel from fine sand (c) small stones from dal (d) bran from wheat flour
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a mirror
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False

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