Separating Mixtures Experiment Worksheet

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

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