Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 928 · 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.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
2. 2.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a clean glass (d) sand and pebbles
5. 5.⚖️ 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
6. 6.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
7. 7.True or false: yeast is needed for the muddy water filter. (a) True (b) False
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
9. 9.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the amount poured (c) the same glass (d) how clear the water is
11. 11.🫗 Which of these is done by filtering? (a) mud from water (b) salt from sea water (c) small stones from dal (d) chaff from wheat grain
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a magnet (d) muddy water
13. 13.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a balloon (d) muddy water
15. 15.⚖️ 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
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
17. 17.🫗 Which of these is done by sieving? (a) mud from water (b) tea leaves from tea (c) bran from wheat flour (d) small stones from dal
18. 18.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) sieving
19. 19.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
20. 20.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
21. 21.⚖️ 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 same glass (c) the filter material (d) how clear the water is
22. 22.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
23. 23.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
24. 24.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
25. 25.True or false: bran from wheat flour is done by filtering. (a) True (b) False
26. 26.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) a battery cell (d) a balloon
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) muddy water (d) a funnel
28. 28.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
29. 29.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
30. 30.🫗 Which of these is done by sieving? (a) small stones from dal (b) husk from rice grain (c) gravel from fine sand (d) bad grains from rice
31. 31.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) gravel from fine sand (c) salt from sea water (d) chaff from wheat grain
32. 32.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) bran from wheat flour (c) bad grains from rice (d) sugar from sugar water
33. 33.True or false: tea leaves from tea is done by filtering. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🫗 How do we separate salt from sea water? (a) filtering (b) evaporating (c) sieving (d) handpicking
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
38. 38.⚖️ 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
39. 39.🫗 Which of these is done by filtering? (a) husk from rice grain (b) bad grains from rice (c) small stones from dal (d) tea leaves from tea
40. 40.🔮 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

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