Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 145 · 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.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
2. 2.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
3. 3.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
4. 4.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
5. 5.🔮 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
6. 6.True or false: husk from rice grain is done by winnowing. (a) False (b) True
7. 7.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
8. 8.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
9. 9.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
10. 10.🫗 Which of these is done by sieving? (a) bad grains from rice (b) gravel from fine sand (c) salt from sea water (d) sugar from sugar water
11. 11.⚖️ 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
12. 12.True or false: bad grains from rice is done by filtering. (a) True (b) False
13. 13.🛟 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
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) cotton or cloth (d) a magnet
16. 16.⚖️ 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) how clear the water is (c) the same glass (d) the filter material
17. 17.⚖️ 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
18. 18.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
19. 19.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
20. 20.🫗 How do we separate mud from water? (a) handpicking (b) sieving (c) winnowing (d) filtering
21. 21.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) yeast (d) a magnet
23. 23.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) sieving (d) filtering
24. 24.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a mirror (c) muddy water (d) cotton or cloth
26. 26.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) yeast (d) a clean glass
28. 28.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) bran from wheat flour (c) sugar from sugar water (d) salt from sea water
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.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) a clean glass (d) cotton or cloth
32. 32.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) a balloon
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) muddy water (d) sand and pebbles
35. 35.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) tea leaves from tea (c) salt from sea water (d) bran from wheat flour
36. 36.True or false: gravel from fine sand is done by sieving. (a) False (b) True
37. 37.⚖️ 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 measure it (c) we change it
38. 38.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) sieving (d) filtering
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a clean glass (d) a battery cell

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