Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 13 · 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.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) muddy water (d) a mirror
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) sand and pebbles (d) cotton or cloth
4. 4.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
5. 5.🔮 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
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
9. 9.🫗 How do we separate husk from rice grain? (a) evaporating (b) winnowing (c) handpicking (d) sieving
10. 10.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
14. 14.🫗 Which of these is done by evaporating? (a) salt from sea water (b) mud from water (c) bad grains from rice (d) gravel from fine sand
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🫗 Which of these is done by handpicking? (a) mud from water (b) gravel from fine sand (c) bad grains from rice (d) salt from sea water
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a magnet
18. 18.🫗 Which of these is done by filtering? (a) mud from water (b) husk from rice grain (c) bad grains from rice (d) salt from sea water
19. 19.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
20. 20.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) turmeric powder (d) muddy water
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) muddy water (d) yeast
23. 23.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
24. 24.🫗 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
25. 25.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a balloon (d) a funnel
26. 26.🫗 How do we separate mud from water? (a) sieving (b) filtering (c) handpicking (d) evaporating
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the same glass (d) the same funnel
28. 28.True or false: tea leaves from tea is done by filtering. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
30. 30.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) a mirror (d) a battery cell
32. 32.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
33. 33.⚖️ 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 muddy water (c) the filter material
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a battery cell (d) a funnel
35. 35.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.🫗 How do we separate bran from wheat flour? (a) evaporating (b) filtering (c) sieving (d) winnowing
38. 38.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
39. 39.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
40. 40.⚖️ 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) how clear the water is (c) the amount poured (d) the same glass

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