Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 767 · 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 sweet (c) clear water is hot (d) clear water is salty
2. 2.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, if it is clear (d) yes, always
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
4. 4.⚖️ 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 same muddy water (c) how clear the water is (d) the same glass
5. 5.True or false: mud from water is done by winnowing. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🫗 How do we separate sugar from sugar water? (a) filtering (b) handpicking (c) sieving (d) evaporating
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) turmeric powder (c) yeast (d) a balloon
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
11. 11.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
12. 12.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
13. 13.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
14. 14.🫗 How do we separate tea leaves from tea? (a) handpicking (b) sieving (c) filtering (d) winnowing
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a balloon
16. 16.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a magnet (c) a funnel (d) sand and pebbles
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a funnel (d) turmeric powder
20. 20.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
21. 21.🫗 Which of these is done by handpicking? (a) small stones from dal (b) bran from wheat flour (c) mud from water (d) chaff from wheat grain
22. 22.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
23. 23.⚖️ 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) True (b) False
24. 24.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) winnowing (c) filtering (d) evaporating
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) cotton or cloth (c) sand and pebbles (d) a funnel
27. 27.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.⚖️ 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
31. 31.🫗 How do we separate mud from water? (a) sieving (b) filtering (c) handpicking (d) evaporating
32. 32.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) a funnel (d) cotton or cloth
34. 34.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
35. 35.True or false: yeast is needed for the muddy water filter. (a) True (b) False
36. 36.🫗 Which of these is done by sieving? (a) small stones from dal (b) salt from sea water (c) bad grains from rice (d) gravel from fine sand
37. 37.⚖️ 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 funnel (b) the amount poured (c) the filter material (d) the same glass
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) turmeric powder (d) muddy water
39. 39.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: mud from water is done by filtering. (a) False (b) True

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