Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 397 · 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 floats on top (c) it dissolves (d) it sinks to the bottom
2. 2.🫗 Which of these is done by filtering? (a) small stones from dal (b) tea leaves from tea (c) salt from sea water (d) chaff from wheat grain
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a mirror (d) cotton or cloth
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a magnet
5. 5.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
6. 6.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) evaporating (d) sieving
7. 7.True or false: husk from rice grain is done by filtering. (a) True (b) False
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
9. 9.🔮 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
10. 10.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
12. 12.🫗 Which of these is done by filtering? (a) mud from water (b) sugar from sugar water (c) salt from sea water (d) chaff from wheat grain
13. 13.⚖️ 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 amount poured (c) the same funnel (d) how clear the water is
14. 14.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) handpicking (d) filtering
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
17. 17.⚖️ 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 change it (c) we keep it the same
18. 18.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
19. 19.⚖️ 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
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
21. 21.⚖️ 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) False (b) True
22. 22.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) bran from wheat flour (d) small stones from dal
23. 23.⚖️ 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
24. 24.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
25. 25.🫗 Which of these is done by sieving? (a) small stones from dal (b) husk from rice grain (c) tea leaves from tea (d) bran from wheat flour
26. 26.🫗 How do we separate bran from wheat flour? (a) filtering (b) evaporating (c) sieving (d) handpicking
27. 27.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) winnowing (d) sieving
28. 28.🫗 How do we separate sugar from sugar water? (a) winnowing (b) handpicking (c) evaporating (d) sieving
29. 29.⚖️ 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
30. 30.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) salt from sea water (c) tea leaves from tea (d) mud from water
31. 31.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
32. 32.🫗 Which of these is done by sieving? (a) bad grains from rice (b) chaff from wheat grain (c) gravel from fine sand (d) husk from rice grain
33. 33.⚖️ 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 funnel (b) the filter material (c) the same muddy water (d) how clear the water is
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a balloon (d) a funnel
35. 35.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
36. 36.🫗 How do we separate husk from rice grain? (a) sieving (b) filtering (c) handpicking (d) winnowing
37. 37.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
38. 38.True or false: salt from sea water is done by evaporating. (a) True (b) False
39. 39.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
40. 40.True or false: yeast is not needed for the muddy water filter. (a) False (b) True

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