Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 863 · 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.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
2. 2.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
4. 4.🫗 Which of these is done by sieving? (a) small stones from dal (b) salt from sea water (c) chaff from wheat grain (d) bran from wheat flour
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
6. 6.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a clean glass (d) cotton or cloth
8. 8.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a magnet (d) cotton or cloth
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same funnel (c) the same muddy water (d) the filter material
11. 11.🛟 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
12. 12.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
13. 13.⚖️ 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 measure it (c) we change it
14. 14.True or false: mud from water is done by sieving. (a) True (b) False
15. 15.🫗 Which of these is done by handpicking? (a) small stones from dal (b) chaff from wheat grain (c) salt from sea water (d) husk from rice grain
16. 16.⚖️ 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
17. 17.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
18. 18.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
19. 19.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
20. 20.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) evaporating (d) sieving
21. 21.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
22. 22.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) winnowing (d) evaporating
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
25. 25.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) handpicking (d) evaporating
26. 26.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a balloon (d) a funnel
28. 28.🫗 How do we separate husk from rice grain? (a) handpicking (b) sieving (c) evaporating (d) winnowing
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a funnel (c) sand and pebbles (d) muddy water
30. 30.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a balloon (c) yeast (d) a mirror
31. 31.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
32. 32.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
33. 33.⚖️ 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
34. 34.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) sand and pebbles (d) muddy water
37. 37.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
38. 38.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) muddy water (d) yeast
39. 39.True or false: salt from sea water is done by evaporating. (a) True (b) False
40. 40.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates

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