Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 903 · 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: gravel from fine sand is done by sieving. (a) False (b) True
2. 2.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
4. 4.⚖️ 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 muddy water (b) the same funnel (c) the amount poured (d) the filter material
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a magnet
6. 6.🧺 Do we need cotton or cloth 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? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: gravel from fine sand is done by filtering. (a) True (b) False
9. 9.⚖️ 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 glass (c) the filter material
10. 10.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
11. 11.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same glass (c) how clear the water is (d) the same muddy water
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) muddy water (d) a magnet
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) yeast (d) a funnel
16. 16.⚖️ 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 amount poured
17. 17.True or false: husk from rice grain is done by winnowing. (a) False (b) True
18. 18.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) sieving
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) turmeric powder (d) a balloon
20. 20.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) salt from sea water (c) husk from rice grain (d) mud from water
21. 21.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
23. 23.⚖️ 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
24. 24.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
27. 27.🫗 Which of these is done by sieving? (a) small stones from dal (b) mud from water (c) husk from rice grain (d) bran from wheat flour
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
31. 31.True or false: tea leaves from tea is done by evaporating. (a) False (b) True
32. 32.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) tea leaves from tea (c) bran from wheat flour (d) small stones from dal
33. 33.🫗 Which of these is done by sieving? (a) bad grains from rice (b) husk from rice grain (c) gravel from fine sand (d) salt from sea water
34. 34.🫗 How do we separate sugar from sugar water? (a) sieving (b) winnowing (c) filtering (d) evaporating
35. 35.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
36. 36.True or false: sugar from sugar water is done by sieving. (a) False (b) True
37. 37.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) salt from sea water (d) gravel from fine sand
38. 38.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
39. 39.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
40. 40.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed

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