Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 23 · 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 clean glass is not needed for the muddy water filter. (a) False (b) True
2. 2.🔮 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 sand (d) it turns to sugar
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) sand and pebbles (d) muddy water
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.True or false: bad grains from rice is done by filtering. (a) False (b) True
6. 6.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
7. 7.🫗 How do we separate chaff from wheat grain? (a) sieving (b) handpicking (c) winnowing (d) filtering
8. 8.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
9. 9.True or false: mud from water is done by sieving. (a) False (b) True
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a clean glass (d) turmeric powder
11. 11.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) filtering
12. 12.🛟 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
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a balloon (c) turmeric powder (d) yeast
14. 14.🔍 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 dissolves (d) it sinks to the bottom
15. 15.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
16. 16.🫗 Which of these is done by evaporating? (a) mud from water (b) sugar from sugar water (c) gravel from fine sand (d) bran from wheat flour
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
20. 20.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 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
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) sand and pebbles (d) yeast
23. 23.⚖️ 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
24. 24.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) turmeric powder (d) cotton or cloth
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a balloon (c) cotton or cloth (d) muddy water
30. 30.⚖️ 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 glass (c) the amount poured (d) how clear the water is
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.True or false: small stones from dal is done by handpicking. (a) False (b) True
33. 33.🧺 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
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
35. 35.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a mirror
37. 37.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) muddy water (d) a funnel

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