Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 740 · 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.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
2. 2.🫗 How do we separate salt from sea water? (a) filtering (b) sieving (c) evaporating (d) winnowing
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) a clean glass (d) a funnel
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) a clean glass
6. 6.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) winnowing (d) evaporating
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
8. 8.🫗 How do we separate small stones from dal? (a) winnowing (b) handpicking (c) filtering (d) evaporating
9. 9.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) chaff from wheat grain (c) salt from sea water (d) bad grains from rice
10. 10.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
11. 11.True or false: bad grains from rice is done by filtering. (a) False (b) True
12. 12.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) husk from rice grain (c) small stones from dal (d) salt from sea water
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a battery cell (d) cotton or cloth
14. 14.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
15. 15.🧺 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
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
17. 17.🫗 Which of these is done by sieving? (a) small stones from dal (b) husk from rice grain (c) gravel from fine sand (d) sugar from sugar water
18. 18.🫗 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
19. 19.True or false: gravel from fine sand is done by filtering. (a) False (b) True
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
21. 21.⚖️ 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 filter material (d) how clear the water is
22. 22.⚖️ 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
23. 23.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) bad grains from rice (c) chaff from wheat grain (d) salt from sea water
24. 24.⚖️ 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 glass (c) how clear the water is
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
26. 26.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) a funnel (d) a mirror
30. 30.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
31. 31.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
32. 32.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a magnet (d) yeast
35. 35.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the amount poured (c) the same funnel (d) how clear the water is
37. 37.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
38. 38.🫗 Which of these is done by filtering? (a) mud from water (b) sugar from sugar water (c) salt from sea water (d) bad grains from rice
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) cotton or cloth (d) a magnet
40. 40.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a balloon (d) sand and pebbles

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