Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 915 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) muddy water (d) cotton or cloth
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
6. 6.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) sieving (d) handpicking
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
8. 8.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
9. 9.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) mud from water (c) husk from rice grain (d) gravel from fine sand
10. 10.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) bad grains from rice (c) small stones from dal (d) mud from water
11. 11.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) mud from water (c) bad grains from rice (d) husk from rice grain
12. 12.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
13. 13.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ 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 amount poured (c) the same funnel (d) how clear the water is
16. 16.True or false: turmeric powder 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 amount poured”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) yeast (d) sand and pebbles
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
21. 21.True or false: mud from water is done by filtering. (a) False (b) True
22. 22.🧺 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) sand and pebbles
23. 23.🫗 How do we separate gravel from fine sand? (a) filtering (b) evaporating (c) winnowing (d) sieving
24. 24.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
25. 25.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) filtering (d) evaporating
26. 26.⚖️ 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 filter material (c) the same glass
27. 27.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
28. 28.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) evaporating (d) sieving
29. 29.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) evaporating (d) winnowing
30. 30.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) tea leaves from tea (c) bad grains from rice (d) salt from sea water
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
33. 33.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
34. 34.True or false: tea leaves from tea is done by sieving. (a) True (b) False
35. 35.🔮 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
36. 36.True or false: sand and pebbles 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? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.True or false: small stones from dal is done by evaporating. (a) False (b) True
39. 39.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
40. 40.True or false: bran from wheat flour is done by filtering. (a) False (b) True

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