Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 995 · 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 should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
2. 2.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) a magnet (d) a funnel
4. 4.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a battery cell (d) a balloon
5. 5.⚖️ 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 same funnel
6. 6.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
7. 7.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a balloon (d) cotton or cloth
8. 8.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
9. 9.🫗 How do we separate sugar from sugar water? (a) evaporating (b) handpicking (c) filtering (d) winnowing
10. 10.⚖️ 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
11. 11.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) turmeric powder
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) sand and pebbles (d) a clean glass
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a mirror (d) a clean glass
15. 15.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
16. 16.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
17. 17.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) filtering (d) sieving
18. 18.🫗 Which of these is done by winnowing? (a) salt from sea water (b) sugar from sugar water (c) small stones from dal (d) husk from rice grain
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 funnel (c) how clear the water is (d) the same glass
20. 20.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
21. 21.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
22. 22.🫗 Which of these is done by filtering? (a) mud from water (b) small stones from dal (c) chaff from wheat grain (d) bad grains from rice
23. 23.🫗 Which of these is done by evaporating? (a) salt from sea water (b) small stones from dal (c) mud from water (d) chaff from wheat grain
24. 24.⚖️ 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 amount poured
25. 25.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
26. 26.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
27. 27.True or false: gravel from fine sand is done by filtering. (a) False (b) True
28. 28.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
29. 29.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) husk from rice grain (c) sugar from sugar water (d) bran from wheat flour
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
31. 31.⚖️ 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
32. 32.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
34. 34.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) winnowing (d) evaporating
35. 35.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
36. 36.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
38. 38.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
39. 39.True or false: bran from wheat flour is done by filtering. (a) False (b) True
40. 40.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay

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