Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 125 · 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.⚖️ 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 muddy water
2. 2.🫗 How do we separate bran from wheat flour? (a) filtering (b) handpicking (c) sieving (d) winnowing
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
4. 4.⚖️ 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
5. 5.True or false: tea leaves from tea is done by filtering. (a) False (b) True
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same glass (c) the same muddy water (d) the amount poured
7. 7.🧺 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
8. 8.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
10. 10.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
11. 11.True or false: yeast is needed for the muddy water filter. (a) False (b) True
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
13. 13.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
14. 14.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
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 a battery cell for the muddy water filter? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a mirror (c) a battery cell (d) a funnel
18. 18.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
19. 19.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a mirror (d) yeast
22. 22.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bad grains from rice (c) mud from water (d) gravel from fine sand
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.⚖️ 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) how clear the water is (c) the same glass (d) the amount poured
25. 25.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
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: husk from rice grain is done by sieving. (a) True (b) False
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
30. 30.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
31. 31.🫗 How do we separate husk from rice grain? (a) handpicking (b) filtering (c) winnowing (d) sieving
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a funnel (d) a balloon
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) sand and pebbles (d) a clean glass
34. 34.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) salt from sea water (c) small stones from dal (d) bad grains from rice
38. 38.🫗 Which of these is done by sieving? (a) mud from water (b) husk from rice grain (c) salt from sea water (d) bran from wheat flour
39. 39.🫗 How do we separate sugar from sugar water? (a) evaporating (b) winnowing (c) sieving (d) handpicking
40. 40.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) sieving (d) filtering

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