Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 367 · 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) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
2. 2.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) evaporating (d) winnowing
3. 3.⚖️ 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) the same glass (c) how clear the water is
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) yeast (d) a clean glass
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a mirror (d) cotton or cloth
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a balloon (d) a funnel
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) sand and pebbles (d) turmeric powder
9. 9.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
10. 10.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) a funnel (d) a balloon
12. 12.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a balloon (d) muddy water
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
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 clean glass (d) a magnet
15. 15.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
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 change it (b) we measure it (c) we keep it the same
17. 17.🫗 Which of these is done by winnowing? (a) small stones from dal (b) chaff from wheat grain (c) salt from sea water (d) tea leaves from tea
18. 18.True or false: salt from sea water is done by filtering. (a) False (b) True
19. 19.⚖️ 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
20. 20.🫗 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
21. 21.True or false: bad grains from rice is done by handpicking. (a) False (b) True
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) a funnel (d) sand and pebbles
23. 23.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a balloon (d) cotton or cloth
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a mirror (d) sand and pebbles
25. 25.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) salt from sea water (c) small stones from dal (d) gravel from fine sand
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same funnel (c) the filter material (d) the same muddy water
28. 28.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the filter material (d) the same glass
30. 30.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
31. 31.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
33. 33.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
35. 35.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
36. 36.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) gravel from fine sand (c) bad grains from rice (d) salt from sea water
37. 37.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) tea leaves from tea (c) sugar from sugar water (d) bran from wheat flour
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
39. 39.True or false: small stones from dal is done by handpicking. (a) False (b) True
40. 40.⚖️ 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

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