Separating Mixtures Experiment Worksheet

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

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