Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 879 · 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? Which of these is what we measure? (a) the filter material (b) the same glass (c) the same funnel (d) how clear the water is
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
6. 6.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
8. 8.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
9. 9.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
10. 10.🫗 Which of these is done by sieving? (a) small stones from dal (b) bran from wheat flour (c) husk from rice grain (d) sugar from sugar water
11. 11.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) a balloon (d) a mirror
13. 13.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) handpicking (d) evaporating
14. 14.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
16. 16.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) husk from rice grain (c) bad grains from rice (d) tea leaves from tea
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) cotton or cloth (d) sand and pebbles
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
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 same funnel (c) the filter material
21. 21.True or false: small stones from dal is done by evaporating. (a) False (b) True
22. 22.True or false: small stones from dal is done by handpicking. (a) False (b) True
23. 23.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
24. 24.🔍 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
25. 25.🔮 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
26. 26.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) handpicking (d) winnowing
27. 27.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) handpicking (d) sieving
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a mirror (d) a clean glass
29. 29.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
30. 30.🫗 Which of these is done by filtering? (a) salt from sea water (b) mud from water (c) gravel from fine sand (d) bad grains from rice
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) sand and pebbles (d) a funnel
32. 32.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
33. 33.True or false: bran from wheat flour is done by sieving. (a) False (b) True
34. 34.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
35. 35.True or false: yeast is needed for the muddy water filter. (a) False (b) True
36. 36.⚖️ 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
37. 37.🫗 Which of these is done by handpicking? (a) salt from sea water (b) bran from wheat flour (c) small stones from dal (d) sugar from sugar water
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
39. 39.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 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) cotton or cloth

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