Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 904 · 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 the one thing we change? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the same funnel
2. 2.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
3. 3.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) muddy water (d) a balloon
4. 4.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
5. 5.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) sieving (d) winnowing
6. 6.🔮 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
7. 7.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
8. 8.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
9. 9.🫗 How do we separate salt from sea water? (a) evaporating (b) filtering (c) winnowing (d) sieving
10. 10.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) sieving (c) filtering (d) winnowing
11. 11.🫗 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
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a funnel (c) a battery cell (d) a mirror
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) yeast
14. 14.🫗 Which of these is done by evaporating? (a) mud from water (b) chaff from wheat grain (c) salt from sea water (d) husk from rice grain
15. 15.True or false: cotton or cloth is 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? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
18. 18.True or false: bad grains from rice is done by handpicking. (a) False (b) True
19. 19.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) sieving (d) winnowing
20. 20.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the filter adds soap (d) the water evaporates
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
22. 22.⚖️ 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
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) sand and pebbles (d) a magnet
25. 25.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
27. 27.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
28. 28.⚖️ 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 filter material (c) the same muddy water
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) yeast (d) a funnel
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a magnet (d) a clean glass
32. 32.True or false: husk from rice grain is done by winnowing. (a) False (b) True
33. 33.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ 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) how clear the water is (c) the amount poured
35. 35.True or false: gravel from fine sand is done by filtering. (a) False (b) True
36. 36.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) chaff from wheat grain (c) bad grains from rice (d) sugar from sugar water
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) turmeric powder (d) sand and pebbles
39. 39.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) small stones from dal (c) bran from wheat flour (d) tea leaves from tea
40. 40.🫗 How do we separate sugar from sugar water? (a) filtering (b) winnowing (c) evaporating (d) sieving

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