Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 385 · 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.🧺 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 funnel (d) yeast
2. 2.True or false: sugar from sugar water is done by sieving. (a) True (b) False
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
4. 4.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bran from wheat flour (c) chaff from wheat grain (d) husk from rice grain
5. 5.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) turmeric powder (d) a clean glass
6. 6.⚖️ 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) the same funnel (c) how clear the water is
7. 7.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
8. 8.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same funnel (c) the filter material (d) the same glass
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a balloon (d) sand and pebbles
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
12. 12.⚖️ 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
13. 13.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
15. 15.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
16. 16.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.⚖️ 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 change it (c) we measure it
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
20. 20.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 How do we separate gravel from fine sand? (a) evaporating (b) handpicking (c) sieving (d) filtering
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) a clean glass (d) cotton or cloth
24. 24.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) winnowing (d) handpicking
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a funnel (d) yeast
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
28. 28.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
29. 29.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) filtering (d) sieving
30. 30.🫗 How do we separate bad grains from rice? (a) handpicking (b) filtering (c) winnowing (d) evaporating
31. 31.⚖️ 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
32. 32.True or false: bad grains from rice is done by sieving. (a) True (b) False
33. 33.True or false: small stones from dal is done by filtering. (a) False (b) True
34. 34.True or false: salt from sea water is done by winnowing. (a) True (b) False
35. 35.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
36. 36.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
38. 38.True or false: salt from sea water is done by filtering. (a) True (b) False
39. 39.🫗 How do we separate husk from rice grain? (a) sieving (b) evaporating (c) winnowing (d) handpicking
40. 40.True or false: sugar from sugar water is done by evaporating. (a) False (b) True

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