Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 679 · 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 needed for the muddy water filter? (a) a balloon (b) a magnet (c) a mirror (d) sand and pebbles
2. 2.🫗 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
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a funnel (c) a mirror (d) a balloon
4. 4.True or false: sugar from sugar water is done by sieving. (a) True (b) False
5. 5.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
6. 6.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
7. 7.⚖️ 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
8. 8.🫗 How do we separate bran from wheat flour? (a) winnowing (b) sieving (c) handpicking (d) filtering
9. 9.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a funnel (c) cotton or cloth (d) sand and pebbles
11. 11.🛟 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
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.⚖️ 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
14. 14.🫗 Which of these is done by sieving? (a) mud from water (b) bran from wheat flour (c) bad grains from rice (d) salt from sea water
15. 15.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same muddy water (c) how clear the water is
17. 17.True or false: salt from sea water is done by evaporating. (a) False (b) True
18. 18.🫗 Which of these is done by filtering? (a) husk from rice grain (b) bran from wheat flour (c) sugar from sugar water (d) tea leaves from tea
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) muddy water (d) a magnet
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
21. 21.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
22. 22.True or false: mud from water is done by sieving. (a) True (b) False
23. 23.True or false: bad grains from rice is done by handpicking. (a) True (b) False
24. 24.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bad grains from rice (c) sugar from sugar water (d) gravel from fine sand
28. 28.🫗 Which of these is done by filtering? (a) mud from water (b) salt from sea water (c) sugar from sugar water (d) small stones from dal
29. 29.🔮 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
30. 30.True or false: husk from rice grain is done by sieving. (a) False (b) True
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 funnel (b) how clear the water is (c) the same glass (d) the same muddy water
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
33. 33.🫗 Which of these is done by handpicking? (a) mud from water (b) small stones from dal (c) bran from wheat flour (d) chaff from wheat grain
34. 34.True or false: gravel from fine sand is done by winnowing. (a) True (b) False
35. 35.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) evaporating (d) handpicking
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) sand and pebbles (d) a clean glass
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 glass (b) how clear the water is (c) the filter material (d) the same funnel
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
40. 40.⚖️ 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 change it (b) we keep it the same (c) we measure it

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