Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 651 · 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: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
2. 2.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
3. 3.⚖️ 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
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
5. 5.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
6. 6.True or false: bran from wheat flour is done by sieving. (a) False (b) True
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) a funnel (d) a magnet
9. 9.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
10. 10.True or false: gravel from fine sand is done by evaporating. (a) False (b) True
11. 11.🛟 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
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) turmeric powder (c) muddy water (d) cotton or cloth
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a clean glass (d) a funnel
14. 14.🔮 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
15. 15.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
17. 17.⚖️ 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
18. 18.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
19. 19.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
21. 21.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
22. 22.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
23. 23.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same funnel (d) the same glass
25. 25.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
26. 26.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
27. 27.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
28. 28.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
29. 29.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.True or false: bad grains from rice is done by evaporating. (a) True (b) False
32. 32.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
33. 33.⚖️ 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 muddy water (c) how clear the water is (d) the amount poured
34. 34.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
35. 35.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
36. 36.True or false: sugar from sugar water is done by filtering. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) a mirror (d) yeast
39. 39.🫗 Which of these is done by evaporating? (a) salt from sea water (b) mud from water (c) bad grains from rice (d) chaff from wheat grain
40. 40.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True

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