Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 80 · 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: yeast is needed for the muddy water filter. (a) False (b) True
2. 2.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) gravel from fine sand (c) sugar from sugar water (d) husk from rice grain
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
5. 5.⚖️ 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
6. 6.True or false: sugar from sugar water is done by sieving. (a) True (b) False
7. 7.🫗 How do we separate tea leaves from tea? (a) sieving (b) winnowing (c) filtering (d) handpicking
8. 8.True or false: tea leaves from tea is done by filtering. (a) False (b) True
9. 9.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) turmeric powder (d) muddy water
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 same glass (c) the filter material
12. 12.⚖️ 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 amount poured
13. 13.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) turmeric powder (d) a magnet
14. 14.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) winnowing (d) sieving
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 funnel (c) how clear the water is
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
17. 17.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
18. 18.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
19. 19.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) a magnet (d) a battery cell
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a funnel (d) a battery cell
22. 22.🫗 How do we separate sugar from sugar water? (a) handpicking (b) winnowing (c) evaporating (d) filtering
23. 23.🫗 How do we separate gravel from fine sand? (a) handpicking (b) sieving (c) evaporating (d) winnowing
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a mirror (d) a clean glass
25. 25.True or false: sugar from sugar water is done by winnowing. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
28. 28.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
29. 29.🫗 How do we separate husk from rice grain? (a) filtering (b) evaporating (c) sieving (d) winnowing
30. 30.🫗 Which of these is done by sieving? (a) bad grains from rice (b) salt from sea water (c) sugar from sugar water (d) bran from wheat flour
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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 amount poured (c) the same muddy water (d) the filter material
33. 33.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
34. 34.⚖️ 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) False (b) True
35. 35.True or false: small stones from dal is done by evaporating. (a) True (b) False
36. 36.⚖️ 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) False (b) True
37. 37.True or false: tea leaves from tea is done by winnowing. (a) False (b) True
38. 38.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) yeast (c) a funnel (d) a clean glass
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) muddy water (d) a clean glass

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