Separating Mixtures Experiment Worksheet

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

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