Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 5 · 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.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) sugar from sugar water (c) tea leaves from tea (d) chaff from wheat grain
2. 2.⚖️ 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
3. 3.⚖️ 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) the filter material (c) how clear the water is (d) the same muddy water
4. 4.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) gravel from fine sand (d) husk from rice grain
5. 5.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
6. 6.⚖️ 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) True (b) False
7. 7.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
8. 8.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
9. 9.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bran from wheat flour (c) mud from water (d) salt from sea water
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a clean glass (d) a magnet
13. 13.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
14. 14.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) chaff from wheat grain (c) salt from sea water (d) bran from wheat flour
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) cotton or cloth (d) muddy water
16. 16.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) winnowing (d) sieving
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
18. 18.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) sieving (d) handpicking
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the same funnel
21. 21.⚖️ 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
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
23. 23.True or false: salt from sea water is done by handpicking. (a) False (b) True
24. 24.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
27. 27.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
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) how clear the water is (b) the same muddy water (c) the same funnel (d) the filter material
29. 29.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
31. 31.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) cotton or cloth (d) a clean glass
33. 33.⚖️ 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
34. 34.🫗 How do we separate mud from water? (a) handpicking (b) sieving (c) filtering (d) evaporating
35. 35.True or false: gravel from fine sand is done by filtering. (a) True (b) False
36. 36.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
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 measure it (b) we change it (c) we keep it the same
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 muddy water
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) a balloon
40. 40.True or false: gravel from fine sand is done by sieving. (a) False (b) True

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