Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 403 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) how clear the water is (c) the same funnel (d) the same glass
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) sand and pebbles (d) a battery cell
3. 3.⚖️ 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
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
6. 6.🫗 Which of these is done by sieving? (a) bad grains from rice (b) gravel from fine sand (c) husk from rice grain (d) salt from sea water
7. 7.⚖️ 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
8. 8.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
9. 9.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a mirror (d) a funnel
10. 10.🫗 Which of these is done by filtering? (a) bad grains from rice (b) tea leaves from tea (c) small stones from dal (d) husk from rice grain
11. 11.⚖️ 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 amount poured
12. 12.🫗 How do we separate husk from rice grain? (a) evaporating (b) filtering (c) sieving (d) winnowing
13. 13.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
14. 14.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) filtering (d) evaporating
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) yeast (d) a clean glass
17. 17.⚖️ 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) True (b) False
18. 18.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
19. 19.🫗 How do we separate bran from wheat flour? (a) handpicking (b) winnowing (c) sieving (d) evaporating
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) a funnel (c) muddy water (d) cotton or cloth
21. 21.🫗 How do we separate bad grains from rice? (a) sieving (b) winnowing (c) evaporating (d) handpicking
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
23. 23.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
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.True or false: small stones from dal is done by evaporating. (a) True (b) False
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) sand and pebbles
27. 27.🫗 Which of these is done by handpicking? (a) mud from water (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal
28. 28.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a balloon (d) a clean glass
30. 30.🛟 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
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) yeast (d) a mirror
32. 32.🫗 How do we separate small stones from dal? (a) winnowing (b) filtering (c) handpicking (d) evaporating
33. 33.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) small stones from dal (c) mud from water (d) husk from rice grain
34. 34.🧺 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) a funnel
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
36. 36.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
37. 37.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
38. 38.🔮 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
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the amount poured (c) how clear the water is (d) the same muddy water
40. 40.⚖️ 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

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