Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 198 · 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.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
6. 6.🛟 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
7. 7.🫗 How do we separate bran from wheat flour? (a) handpicking (b) filtering (c) evaporating (d) sieving
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a mirror (c) a clean glass (d) cotton or cloth
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a mirror (c) sand and pebbles (d) muddy water
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) husk from rice grain (c) gravel from fine sand (d) tea leaves from tea
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a balloon (d) a funnel
15. 15.🫗 How do we separate salt from sea water? (a) filtering (b) handpicking (c) evaporating (d) winnowing
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) cotton or cloth (c) sand and pebbles (d) muddy water
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a funnel (d) a battery cell
18. 18.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
23. 23.⚖️ 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
24. 24.True or false: bad grains from rice is done by handpicking. (a) True (b) False
25. 25.⚖️ 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
26. 26.🫗 How do we separate small stones from dal? (a) winnowing (b) filtering (c) handpicking (d) sieving
27. 27.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
29. 29.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
30. 30.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) turmeric powder (d) muddy water
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) sand and pebbles (c) a mirror (d) turmeric powder
33. 33.🫗 Which of these is done by evaporating? (a) salt from sea water (b) mud from water (c) bran from wheat flour (d) small stones from dal
34. 34.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) small stones from dal (c) gravel from fine sand (d) chaff from wheat grain
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) sand and pebbles (d) muddy water
36. 36.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 Which of these is done by sieving? (a) mud from water (b) chaff from wheat grain (c) bran from wheat flour (d) husk from rice grain
38. 38.True or false: sugar from sugar water is done by sieving. (a) True (b) False
39. 39.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
40. 40.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed

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