Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 382 · 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.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) mud from water (c) bran from wheat flour (d) husk from rice grain
4. 4.🫗 Which of these is done by evaporating? (a) mud from water (b) chaff from wheat grain (c) salt from sea water (d) bran from wheat flour
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) a mirror
7. 7.🫗 How do we separate sugar from sugar water? (a) sieving (b) filtering (c) evaporating (d) winnowing
8. 8.🫗 Which of these is done by handpicking? (a) salt from sea water (b) bran from wheat flour (c) small stones from dal (d) husk from rice grain
9. 9.True or false: bran from wheat flour is done by sieving. (a) True (b) False
10. 10.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
11. 11.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
12. 12.⚖️ 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 measure it (c) we change it
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
14. 14.🔮 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
15. 15.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
16. 16.⚖️ 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) True (b) False
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
18. 18.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) husk from rice grain (c) bad grains from rice (d) mud from water
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) sand and pebbles (d) a funnel
21. 21.🫗 Which of these is done by filtering? (a) salt from sea water (b) chaff from wheat grain (c) gravel from fine sand (d) tea leaves from tea
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
23. 23.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
24. 24.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is salty (d) clear water is sweet
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a funnel (d) yeast
26. 26.🔍 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
27. 27.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
28. 28.⚖️ 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) the filter material (c) how clear the water is (d) the same glass
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ 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 keep it the same (c) we measure it
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
33. 33.True or false: sugar from sugar water is done by winnowing. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
35. 35.🫗 How do we separate bad grains from rice? (a) evaporating (b) handpicking (c) sieving (d) winnowing
36. 36.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a balloon
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) a funnel (d) muddy water
39. 39.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
40. 40.⚖️ 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

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