Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 520 · 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.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
2. 2.⚖️ 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 amount poured (c) how clear the water is (d) the same muddy water
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a mirror (d) sand and pebbles
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a funnel (d) a magnet
7. 7.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
8. 8.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a battery cell
11. 11.⚖️ 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 change it (c) we measure it
12. 12.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it dissolves (d) it sinks to the bottom
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
15. 15.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
16. 16.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
17. 17.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
18. 18.⚖️ 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) True (b) False
19. 19.🫗 Which of these is done by handpicking? (a) mud from water (b) small stones from dal (c) salt from sea water (d) tea leaves from tea
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) how clear the water is (c) the filter material (d) the same muddy water
21. 21.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a magnet
23. 23.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
24. 24.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) a magnet (d) a clean glass
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) a battery cell (d) a balloon
28. 28.🫗 How do we separate sugar from sugar water? (a) evaporating (b) handpicking (c) sieving (d) filtering
29. 29.🔮 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
30. 30.True or false: mud from water is done by filtering. (a) False (b) True
31. 31.True or false: husk from rice grain is done by handpicking. (a) False (b) True
32. 32.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
33. 33.🫗 How do we separate gravel from fine sand? (a) winnowing (b) evaporating (c) handpicking (d) sieving
34. 34.🫗 How do we separate bad grains from rice? (a) sieving (b) evaporating (c) filtering (d) handpicking
35. 35.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) winnowing (d) handpicking
36. 36.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) gravel from fine sand (c) bad grains from rice (d) bran from wheat flour
37. 37.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) mud from water (c) small stones from dal (d) husk from rice grain
38. 38.True or false: small stones from dal is done by handpicking. (a) True (b) False
39. 39.🫗 How do we separate salt from sea water? (a) filtering (b) winnowing (c) evaporating (d) sieving
40. 40.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) gravel from fine sand (c) bad grains from rice (d) bran from wheat flour

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