Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 298 · 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 clean glass (b) muddy water (c) a magnet (d) a funnel
2. 2.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a funnel (d) a magnet
3. 3.⚖️ 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
4. 4.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) gravel from fine sand (c) husk from rice grain (d) salt from sea water
5. 5.⚖️ 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
6. 6.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) sieving (d) winnowing
7. 7.True or false: bad grains from rice is done by winnowing. (a) True (b) False
8. 8.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
10. 10.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
11. 11.True or false: tea leaves from tea is done by sieving. (a) False (b) True
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
13. 13.True or false: tea leaves from tea is done by winnowing. (a) False (b) True
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
15. 15.⚖️ 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
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) sand and pebbles (d) a funnel
18. 18.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
19. 19.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
20. 20.⚖️ 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
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.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
23. 23.True or false: gravel from fine sand is done by sieving. (a) False (b) True
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) a clean glass (d) cotton or cloth
25. 25.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) tea leaves from tea (c) bad grains from rice (d) salt from sea water
26. 26.🧺 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 mirror (d) a clean glass
27. 27.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
28. 28.⚖️ 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 glass (b) the amount poured (c) the same muddy water (d) the filter material
29. 29.⚖️ 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 change it (c) we measure it
30. 30.⚖️ 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 same funnel (c) the same muddy water (d) the filter material
31. 31.🛟 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
32. 32.⚖️ 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
33. 33.⚖️ 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) True (b) False
34. 34.🫗 How do we separate husk from rice grain? (a) sieving (b) handpicking (c) evaporating (d) winnowing
35. 35.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter traps mud (d) the filter adds soap
36. 36.⚖️ 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) False (b) True
37. 37.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
38. 38.⚖️ 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 funnel
39. 39.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed

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