Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 676 · 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.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
2. 2.True or false: tea leaves from tea is done by filtering. (a) True (b) False
3. 3.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) bran from wheat flour (c) mud from water (d) small stones from dal
4. 4.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) a mirror
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a balloon (d) a funnel
12. 12.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) mud from water (c) bad grains from rice (d) tea leaves from tea
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
14. 14.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
15. 15.⚖️ 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
16. 16.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) filtering (d) evaporating
17. 17.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) how clear the water is (d) the same funnel
20. 20.⚖️ 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 amount poured (c) the same muddy water (d) the same funnel
21. 21.True or false: bran from wheat flour is done by sieving. (a) True (b) False
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) yeast (d) sand and pebbles
23. 23.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
26. 26.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) husk from rice grain (c) small stones from dal (d) tea leaves from tea
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) cotton or cloth (d) a funnel
28. 28.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
29. 29.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
30. 30.⚖️ 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 keep it the same (c) we measure it
31. 31.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
32. 32.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
33. 33.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
34. 34.True or false: small stones from dal is done by handpicking. (a) True (b) False
35. 35.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) cotton or cloth (d) a funnel
37. 37.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a magnet (d) a funnel
38. 38.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bran from wheat flour (c) husk from rice grain (d) bad grains from rice
39. 39.True or false: husk from rice grain is done by winnowing. (a) True (b) False
40. 40.True or false: bran from wheat flour is done by handpicking. (a) True (b) False

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