Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 643 · 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.⚖️ 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) the same muddy water (d) the same glass
3. 3.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
4. 4.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) leaves pass through (d) both stay behind
5. 5.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bad grains from rice (c) husk from rice grain (d) sugar from sugar water
6. 6.🫗 How do we separate sugar from sugar water? (a) evaporating (b) winnowing (c) handpicking (d) filtering
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a balloon
8. 8.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
9. 9.True or false: sugar from sugar water is done by winnowing. (a) False (b) True
10. 10.⚖️ 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
11. 11.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) a magnet (d) a funnel
13. 13.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
14. 14.⚖️ 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) True (b) False
15. 15.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) it turns to sand (d) yes, all of it
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) muddy water (d) a clean glass
18. 18.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) sand and pebbles (d) cotton or cloth
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) salt from sea water (c) sugar from sugar water (d) chaff from wheat grain
24. 24.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
25. 25.True or false: gravel from fine sand is done by filtering. (a) True (b) False
26. 26.🫗 How do we separate bran from wheat flour? (a) filtering (b) sieving (c) winnowing (d) evaporating
27. 27.🫗 How do we separate mud from water? (a) winnowing (b) evaporating (c) sieving (d) filtering
28. 28.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) evaporating (d) sieving
29. 29.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
30. 30.🫗 Which of these is done by handpicking? (a) small stones from dal (b) salt from sea water (c) mud from water (d) gravel from fine sand
31. 31.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) cotton or cloth (d) a magnet
32. 32.True or false: bad grains from rice is done by handpicking. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: tea leaves from tea is done by filtering. (a) False (b) True
35. 35.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
36. 36.True or false: small stones from dal is done by handpicking. (a) True (b) False
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a battery cell (d) a clean glass
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) yeast (d) muddy water
39. 39.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
40. 40.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay

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