Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 488 · 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 yeast for the muddy water filter? (a) needed (b) not needed
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
3. 3.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
4. 4.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) a clean glass (d) sand and pebbles
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) cotton or cloth (d) a clean glass
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) sand and pebbles (d) a magnet
9. 9.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) nothing is needed (d) lick your fingers
10. 10.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
11. 11.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) gravel from fine sand (d) bad grains from rice
12. 12.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) handpicking
13. 13.⚖️ 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
14. 14.True or false: gravel from fine sand is done by filtering. (a) True (b) False
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
17. 17.🧺 Do we need turmeric powder 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 “how clear the water is”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) yeast (d) a clean glass
22. 22.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
23. 23.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) husk from rice grain (c) gravel from fine sand (d) salt from sea water
24. 24.⚖️ 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
25. 25.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
26. 26.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
27. 27.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
29. 29.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
31. 31.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
32. 32.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
33. 33.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
34. 34.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
35. 35.🫗 How do we separate tea leaves from tea? (a) winnowing (b) handpicking (c) evaporating (d) filtering
36. 36.True or false: salt from sea water is done by sieving. (a) True (b) False
37. 37.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) filtering (d) handpicking
38. 38.🔮 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
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
40. 40.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed

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