Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 877 · 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.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the filter adds soap (d) the mud dissolves
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
3. 3.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) a funnel (d) cotton or cloth
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a clean glass (d) yeast
7. 7.⚖️ 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
8. 8.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) winnowing (d) handpicking
9. 9.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) handpicking (d) evaporating
10. 10.True or false: bran from wheat flour is done by filtering. (a) False (b) True
11. 11.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
12. 12.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
13. 13.🫗 Which of these is done by filtering? (a) bad grains from rice (b) husk from rice grain (c) small stones from dal (d) mud from water
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) sand and pebbles (d) a balloon
15. 15.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
16. 16.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) tea leaves from tea (c) sugar from sugar water (d) salt from sea water
17. 17.⚖️ 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 same glass
18. 18.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
19. 19.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) muddy water (d) yeast
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) yeast (c) muddy water (d) a clean glass
22. 22.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
23. 23.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
25. 25.🫗 Which of these is done by sieving? (a) small stones from dal (b) salt from sea water (c) gravel from fine sand (d) sugar from sugar water
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) sand and pebbles (d) a funnel
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
28. 28.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) sieving (d) winnowing
29. 29.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
30. 30.⚖️ 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 glass (b) how clear the water is (c) the filter material (d) the amount poured
31. 31.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) small stones from dal
32. 32.True or false: bad grains from rice is done by handpicking. (a) False (b) True
33. 33.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) turmeric powder (d) sand and pebbles
35. 35.⚖️ 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
36. 36.True or false: mud from water is done by winnowing. (a) True (b) False
37. 37.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.⚖️ 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 same funnel (c) the same muddy water (d) the amount poured

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