Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 575 · 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) muddy water (b) yeast (c) sand and pebbles (d) cotton or cloth
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
4. 4.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
5. 5.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) a funnel (d) a clean glass
7. 7.True or false: tea leaves from tea is done by filtering. (a) True (b) False
8. 8.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
11. 11.⚖️ 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) how clear the water is (c) the same funnel (d) the filter material
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a battery cell (d) sand and pebbles
13. 13.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
14. 14.🫗 How do we separate bran from wheat flour? (a) sieving (b) filtering (c) handpicking (d) evaporating
15. 15.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
16. 16.True or false: yeast is needed for the muddy water filter. (a) False (b) True
17. 17.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) evaporating (d) sieving
18. 18.⚖️ 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) how clear the water is (c) the filter material (d) the same muddy water
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) yeast (d) cotton or cloth
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
21. 21.🔮 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
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a magnet (d) sand and pebbles
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) salt from sea water (c) chaff from wheat grain (d) bran from wheat flour
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a mirror
28. 28.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) bad grains from rice (c) tea leaves from tea (d) bran from wheat flour
29. 29.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) filtering (d) handpicking
30. 30.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) cotton or cloth (d) a balloon
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
33. 33.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
34. 34.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bad grains from rice (c) husk from rice grain (d) chaff from wheat grain
35. 35.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: tea leaves from tea is done by sieving. (a) False (b) True
40. 40.⚖️ 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

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