Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 226 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
2. 2.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
3. 3.⚖️ 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) how clear the water is (c) the filter material
4. 4.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
5. 5.True or false: tea leaves from tea is done by filtering. (a) False (b) True
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) muddy water (d) a magnet
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
9. 9.🫗 How do we separate tea leaves from tea? (a) filtering (b) sieving (c) winnowing (d) handpicking
10. 10.🫗 How do we separate husk from rice grain? (a) winnowing (b) filtering (c) sieving (d) evaporating
11. 11.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🫗 Which of these is done by sieving? (a) bad grains from rice (b) small stones from dal (c) tea leaves from tea (d) bran from wheat flour
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) yeast
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
16. 16.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
17. 17.🧺 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 mirror
18. 18.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
19. 19.⚖️ 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 measure it (c) we change it
20. 20.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
21. 21.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
22. 22.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
23. 23.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a balloon (d) turmeric powder
26. 26.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
27. 27.True or false: sugar from sugar water is done by sieving. (a) False (b) True
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) a clean glass (d) cotton or cloth
29. 29.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
30. 30.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) cotton or cloth (d) turmeric powder
32. 32.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) a magnet (d) cotton or cloth
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) a clean glass
35. 35.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a balloon (d) muddy water
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) turmeric powder (d) muddy water
38. 38.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
39. 39.🫗 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
40. 40.True or false: mud from water is done by evaporating. (a) False (b) True

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