Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 524 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
2. 2.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
3. 3.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) handpicking (d) sieving
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a battery cell
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
7. 7.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
8. 8.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
9. 9.⚖️ 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
10. 10.True or false: bad grains from rice is done by winnowing. (a) True (b) False
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves pass through (d) leaves stay behind
14. 14.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: bran from wheat flour is done by sieving. (a) False (b) True
16. 16.🫗 Which of these is done by handpicking? (a) salt from sea water (b) husk from rice grain (c) chaff from wheat grain (d) bad grains from rice
17. 17.⚖️ 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 measure it (b) we change it (c) we keep it the same
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) cotton or cloth (d) a battery cell
19. 19.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
21. 21.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
22. 22.🫗 How do we separate gravel from fine sand? (a) handpicking (b) evaporating (c) sieving (d) filtering
23. 23.⚖️ 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 glass (c) the same funnel (d) the amount poured
24. 24.True or false: mud from water is done by handpicking. (a) True (b) False
25. 25.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a battery cell (d) muddy water
26. 26.🫗 Which of these is done by evaporating? (a) salt from sea water (b) mud from water (c) husk from rice grain (d) tea leaves from tea
27. 27.True or false: bad grains from rice is done by filtering. (a) True (b) False
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a mirror (d) a funnel
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) yeast
30. 30.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
31. 31.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) cotton or cloth (d) a magnet
33. 33.🫗 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
34. 34.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) small stones from dal (c) mud from water (d) gravel from fine sand
35. 35.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) gravel from fine sand (c) bad grains from rice (d) mud from water
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a clean glass (d) a mirror
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a funnel (d) sand and pebbles
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed

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