Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 786 · 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: a magnet is not needed for the muddy water filter. (a) False (b) True
2. 2.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
4. 4.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
7. 7.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a battery cell (c) yeast (d) a magnet
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a balloon (c) a clean glass (d) a funnel
9. 9.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
10. 10.⚖️ 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
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
12. 12.🔮 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) yes, all of it (d) no, salt passes through
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.True or false: mud from water is done by handpicking. (a) True (b) False
15. 15.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
16. 16.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
17. 17.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ 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
19. 19.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
20. 20.🔍 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
21. 21.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
22. 22.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) filtering (d) sieving
23. 23.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
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 keep it the same (b) we change it (c) we measure it
26. 26.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
27. 27.⚖️ 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) False (b) True
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
29. 29.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
30. 30.🫗 How do we separate gravel from fine sand? (a) filtering (b) winnowing (c) evaporating (d) sieving
31. 31.⚖️ 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
32. 32.⚖️ 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 same glass (c) the filter material (d) how clear the water is
33. 33.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) sugar from sugar water (c) salt from sea water (d) bad grains from rice
34. 34.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) winnowing (d) evaporating
35. 35.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) muddy water (d) a funnel
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) muddy water (d) sand and pebbles
39. 39.🫗 How do we separate mud from water? (a) sieving (b) filtering (c) handpicking (d) winnowing
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) how clear the water is (d) the same muddy water

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