Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 641 · 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.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a magnet
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a mirror (d) a battery cell
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) cotton or cloth (d) a clean glass
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) a clean glass (d) sand and pebbles
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🔍 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 turns to sand (d) it dissolves
8. 8.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
9. 9.🛟 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
10. 10.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ 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) False (b) True
12. 12.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) bad grains from rice (c) sugar from sugar water (d) husk from rice grain
13. 13.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) yeast (d) a magnet
14. 14.🫗 Which of these is done by evaporating? (a) salt from sea water (b) husk from rice grain (c) bad grains from rice (d) tea leaves from tea
15. 15.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) handpicking
16. 16.True or false: husk from rice grain is done by handpicking. (a) False (b) True
17. 17.⚖️ 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) the same muddy water (c) how clear the water is
18. 18.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
19. 19.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
20. 20.True or false: chaff from wheat grain is done by filtering. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a funnel (d) a magnet
23. 23.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ 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 funnel (b) the same muddy water (c) the filter material (d) how clear the water is
27. 27.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) sugar from sugar water (c) tea leaves from tea (d) bad grains from rice
28. 28.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a battery cell (d) muddy water
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
31. 31.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
32. 32.🫗 How do we separate bad grains from rice? (a) handpicking (b) filtering (c) winnowing (d) evaporating
33. 33.⚖️ 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
34. 34.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
35. 35.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) yes, all of it (d) it turns to sand
36. 36.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
37. 37.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
39. 39.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
40. 40.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False

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