Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 308 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) a funnel (d) muddy water
2. 2.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) filtering (d) sieving
3. 3.⚖️ 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 amount poured (c) the same glass (d) the filter material
4. 4.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
6. 6.🛟 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
7. 7.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
8. 8.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) husk from rice grain (c) bad grains from rice (d) sugar from sugar water
9. 9.True or false: salt from sea water is done by winnowing. (a) False (b) True
10. 10.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) cotton or cloth (d) a balloon
12. 12.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
13. 13.🔮 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
14. 14.True or false: a battery cell is not 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) muddy water (b) a clean glass (c) cotton or cloth (d) yeast
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a mirror
17. 17.⚖️ 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 filter material (d) the same glass
18. 18.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) cotton or cloth (d) a balloon
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
24. 24.True or false: bad grains from rice is done by filtering. (a) True (b) False
25. 25.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
26. 26.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) a funnel
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.True or false: tea leaves from tea is done by sieving. (a) False (b) True
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a battery cell (d) a funnel
32. 32.True or false: bad grains from rice is done by handpicking. (a) True (b) False
33. 33.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
34. 34.🫗 How do we separate tea leaves from tea? (a) handpicking (b) winnowing (c) filtering (d) evaporating
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a clean glass (d) a magnet
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) yeast (d) turmeric powder
38. 38.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
40. 40.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud

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