Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 938 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
2. 2.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
3. 3.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
4. 4.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
5. 5.⚖️ 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 muddy water (b) the same glass (c) the filter material (d) the amount poured
6. 6.True or false: small stones from dal is done by evaporating. (a) True (b) False
7. 7.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) evaporating (d) filtering
8. 8.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) evaporating (d) handpicking
9. 9.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
11. 11.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) cotton or cloth (d) a battery cell
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same muddy water (c) the filter material (d) the same glass
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) yeast (d) a clean glass
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.⚖️ 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
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
17. 17.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
18. 18.⚖️ 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
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
20. 20.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a balloon (c) sand and pebbles (d) muddy water
23. 23.🫗 Which of these is done by evaporating? (a) salt from sea water (b) tea leaves from tea (c) bran from wheat flour (d) gravel from fine sand
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is salty (d) clear water is sweet
26. 26.True or false: salt from sea water is done by evaporating. (a) True (b) False
27. 27.⚖️ 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 funnel (c) how clear the water is
28. 28.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
29. 29.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
30. 30.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) mud from water (c) bran from wheat flour (d) salt from sea water
31. 31.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
32. 32.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a mirror (c) turmeric powder (d) a battery cell
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) a magnet
36. 36.⚖️ 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) True (b) False
37. 37.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) chaff from wheat grain (c) mud from water (d) gravel from fine sand
38. 38.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through

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