Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 831 · 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 muddy water for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: husk from rice grain is done by filtering. (a) False (b) True
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) gravel from fine sand (c) bad grains from rice (d) sugar from sugar water
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) clearer (d) salty
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) turmeric powder (d) a funnel
12. 12.True or false: bran from wheat flour is done by filtering. (a) True (b) False
13. 13.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
14. 14.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a clean glass (d) a magnet
16. 16.🫗 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
17. 17.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) gravel from fine sand (c) tea leaves from tea (d) small stones from dal
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 sinks to the bottom (d) it dissolves
19. 19.True or false: bran from wheat flour is done by sieving. (a) False (b) True
20. 20.⚖️ 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
21. 21.🫗 How do we separate bran from wheat flour? (a) handpicking (b) winnowing (c) sieving (d) evaporating
22. 22.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
23. 23.True or false: salt from sea water is done by filtering. (a) True (b) False
24. 24.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
27. 27.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
28. 28.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) mud from water (c) gravel from fine sand (d) bad grains from rice
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.⚖️ 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 funnel (c) the filter material (d) how clear the water is
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) a funnel (d) a clean glass
33. 33.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a battery cell (d) a balloon
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a mirror (d) a clean glass
35. 35.True or false: small stones from dal is done by handpicking. (a) False (b) True
36. 36.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) how clear the water is (c) the same funnel (d) the filter material
38. 38.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a battery cell (d) turmeric powder

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