Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 241 · 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 hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
2. 2.⚖️ 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 glass (d) how clear the water is
3. 3.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
4. 4.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
5. 5.🔮 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
6. 6.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.⚖️ 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 amount poured (c) the same glass (d) the filter material
9. 9.⚖️ 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
10. 10.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
11. 11.True or false: yeast is needed for the muddy water filter. (a) False (b) True
12. 12.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
13. 13.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) small stones from dal (c) tea leaves from tea (d) salt from sea water
14. 14.🫗 How do we separate salt from sea water? (a) sieving (b) evaporating (c) handpicking (d) filtering
15. 15.True or false: mud from water is done by winnowing. (a) False (b) True
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a battery cell (d) muddy water
17. 17.🔮 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
18. 18.True or false: bad grains from rice is done by handpicking. (a) True (b) False
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.⚖️ 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
21. 21.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) filtering (d) winnowing
22. 22.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a funnel (c) a mirror (d) a battery cell
23. 23.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
24. 24.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) sugar from sugar water (c) small stones from dal (d) chaff from wheat grain
25. 25.🔍 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 sinks to the bottom (d) it dissolves
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) cotton or cloth (d) a funnel
28. 28.🫗 How do we separate husk from rice grain? (a) handpicking (b) sieving (c) winnowing (d) filtering
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) a funnel (d) a magnet
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.⚖️ 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
33. 33.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) muddy water (d) a clean glass
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) turmeric powder (d) a clean glass
36. 36.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a magnet (d) a mirror
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.True or false: gravel from fine sand is done by sieving. (a) False (b) True
39. 39.🫗 Which of these is done by filtering? (a) bad grains from rice (b) husk from rice grain (c) sugar from sugar water (d) mud from water
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) a balloon (d) turmeric powder

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