Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 374 · 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: tea leaves from tea is done by filtering. (a) True (b) False
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) sand and pebbles (d) muddy water
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
5. 5.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) sieving (d) handpicking
6. 6.🫗 Which of these is done by sieving? (a) bad grains from rice (b) salt from sea water (c) chaff from wheat grain (d) bran from wheat flour
7. 7.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
9. 9.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
10. 10.🫗 How do we separate salt from sea water? (a) winnowing (b) sieving (c) evaporating (d) filtering
11. 11.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a funnel (d) a mirror
12. 12.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
13. 13.⚖️ 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
14. 14.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
15. 15.⚖️ 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 muddy water (c) how clear the water is
16. 16.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
17. 17.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
18. 18.True or false: mud from water is done by winnowing. (a) False (b) True
19. 19.⚖️ 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
20. 20.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) winnowing (d) filtering
21. 21.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) a funnel (d) muddy water
24. 24.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
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 change it (b) we keep it the same (c) we measure it
26. 26.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
27. 27.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) tea leaves from tea (c) small stones from dal (d) husk from rice grain
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) muddy water (d) turmeric powder
30. 30.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same glass
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) yeast (c) sand and pebbles (d) muddy water
35. 35.🧺 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) a funnel
36. 36.⚖️ 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 funnel (c) the same glass (d) the filter material
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
38. 38.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
39. 39.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) filtering (d) handpicking
40. 40.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer

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