Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 154 · 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) no, salt passes through (b) it turns to sugar (c) yes, all of it (d) it turns to sand
2. 2.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
3. 3.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same muddy water (c) the amount poured (d) how clear the water is
5. 5.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) sieving (d) winnowing
6. 6.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) gravel from fine sand (d) bran from wheat flour
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) a funnel (d) muddy water
8. 8.True or false: small stones from dal is done by evaporating. (a) False (b) True
9. 9.⚖️ 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
10. 10.🫗 Which of these is done by winnowing? (a) small stones from dal (b) gravel from fine sand (c) bad grains from rice (d) husk from rice grain
11. 11.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) sieving (d) winnowing
12. 12.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) muddy water (d) a magnet
14. 14.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same glass
16. 16.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
17. 17.⚖️ 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) False (b) True
18. 18.True or false: bad grains from rice is done by handpicking. (a) False (b) True
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) a balloon (d) a clean glass
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same funnel
21. 21.🛟 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
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
23. 23.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
24. 24.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) husk from rice grain (c) chaff from wheat grain (d) sugar from sugar water
25. 25.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) sieving (d) handpicking
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
27. 27.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
28. 28.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
32. 32.True or false: a battery cell is not 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? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
35. 35.True or false: tea leaves from tea is done by filtering. (a) True (b) False
36. 36.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) yeast (d) muddy water
39. 39.🧺 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) a magnet
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind

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