Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 180 · 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.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
4. 4.⚖️ 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) the same funnel (c) the same glass (d) the filter material
5. 5.🫗 How do we separate gravel from fine sand? (a) handpicking (b) evaporating (c) sieving (d) winnowing
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) cotton or cloth (d) a clean glass
7. 7.⚖️ 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 amount poured (c) how clear the water is
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
9. 9.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
10. 10.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
11. 11.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
12. 12.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a battery cell (d) muddy water
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) muddy water (d) cotton or cloth
15. 15.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
16. 16.⚖️ 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 keep it the same (c) we change it
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 measure it (b) we keep it the same (c) we change it
18. 18.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) evaporating (d) winnowing
19. 19.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) filtering (d) sieving
20. 20.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) sieving (d) evaporating
21. 21.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the filter material (d) the same muddy water
23. 23.True or false: small stones from dal is done by winnowing. (a) False (b) True
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.True or false: bran from wheat flour is done by filtering. (a) True (b) False
26. 26.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
27. 27.🔮 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) it turns to sand (d) no, salt passes through
28. 28.🫗 Which of these is done by filtering? (a) small stones from dal (b) salt from sea water (c) chaff from wheat grain (d) tea leaves from tea
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a funnel (d) a battery cell
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.🔍 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
32. 32.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
33. 33.🫗 Which of these is done by sieving? (a) salt from sea water (b) tea leaves from tea (c) bran from wheat flour (d) sugar from sugar water
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
35. 35.🫗 Which of these is done by evaporating? (a) mud from water (b) chaff from wheat grain (c) bran from wheat flour (d) sugar from sugar water
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a clean glass (d) a magnet
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) a mirror
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) muddy water (d) a funnel

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