Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 539 · 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 turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the filter material
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
6. 6.True or false: salt from sea water is done by filtering. (a) False (b) True
7. 7.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
8. 8.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a magnet (d) a battery cell
10. 10.True or false: mud from water is done by filtering. (a) False (b) True
11. 11.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
12. 12.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) a magnet (d) a mirror
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) yeast (d) a funnel
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
15. 15.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
17. 17.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
19. 19.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) filtering (d) handpicking
21. 21.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) sieving (d) filtering
22. 22.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
23. 23.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
24. 24.🧺 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
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.⚖️ 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 muddy water (c) the same glass (d) the amount poured
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a clean glass (d) cotton or cloth
28. 28.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
29. 29.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
30. 30.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) muddy water (d) a clean glass
32. 32.True or false: salt from sea water is done by evaporating. (a) False (b) True
33. 33.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
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) False (b) True
35. 35.🫗 How do we separate bran from wheat flour? (a) handpicking (b) filtering (c) evaporating (d) sieving
36. 36.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
37. 37.True or false: gravel from fine sand is done by filtering. (a) True (b) False
38. 38.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) cotton or cloth (d) a clean glass

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