Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 27 · 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.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: yeast is needed for the muddy water filter. (a) True (b) False
3. 3.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) sand and pebbles (c) cotton or cloth (d) muddy water
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the filter material (c) how clear the water is (d) the same funnel
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) cotton or cloth (d) a funnel
7. 7.⚖️ 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 muddy water (c) how clear the water is
8. 8.True or false: salt from sea water 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 needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) muddy water (d) a mirror
11. 11.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) handpicking
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) a funnel (d) turmeric powder
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) a clean glass (d) muddy water
15. 15.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bad grains from rice (c) tea leaves from tea (d) salt from sea water
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) cotton or cloth (d) a magnet
17. 17.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
18. 18.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
19. 19.🔍 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
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a battery cell (d) a clean glass
21. 21.🫗 How do we separate mud from water? (a) sieving (b) filtering (c) evaporating (d) winnowing
22. 22.True or false: husk from rice grain is done by evaporating. (a) False (b) True
23. 23.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) a clean glass (d) cotton or cloth
25. 25.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
26. 26.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
27. 27.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
28. 28.🔮 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
29. 29.⚖️ 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 muddy water (d) how clear the water is
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
31. 31.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) handpicking (d) winnowing
32. 32.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
33. 33.🫗 Which of these is done by winnowing? (a) small stones from dal (b) tea leaves from tea (c) sugar from sugar water (d) chaff from wheat grain
34. 34.True or false: bran from wheat flour is done by sieving. (a) True (b) False
35. 35.⚖️ 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 glass (c) how clear the water is
36. 36.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
40. 40.⚖️ 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

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