Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 824 · 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.🔮 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
2. 2.🫗 Which of these is done by sieving? (a) bad grains from rice (b) gravel from fine sand (c) husk from rice grain (d) small stones from dal
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
4. 4.🫗 How do we separate husk from rice grain? (a) handpicking (b) filtering (c) evaporating (d) winnowing
5. 5.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
7. 7.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
9. 9.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
10. 10.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
11. 11.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) a magnet (d) yeast
12. 12.🛟 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
13. 13.🫗 Which of these is done by handpicking? (a) small stones from dal (b) tea leaves from tea (c) gravel from fine sand (d) salt from sea water
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) muddy water (c) a funnel (d) sand and pebbles
15. 15.⚖️ 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 filter material (d) the same muddy water
16. 16.🫗 Which of these is done by filtering? (a) husk from rice grain (b) salt from sea water (c) bad grains from rice (d) tea leaves from tea
17. 17.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) muddy water (d) cotton or cloth
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
20. 20.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
21. 21.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
22. 22.True or false: mud from water is done by evaporating. (a) True (b) False
23. 23.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
24. 24.🫗 Which of these is done by evaporating? (a) small stones from dal (b) tea leaves from tea (c) mud from water (d) salt from sea water
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
26. 26.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
27. 27.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) a magnet
29. 29.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) muddy water (d) a mirror
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) a funnel (d) muddy water
31. 31.⚖️ 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 muddy water (b) the filter material (c) the amount poured (d) the same funnel
32. 32.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
33. 33.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) sand and pebbles (d) a clean glass
37. 37.True or false: husk from rice grain is done by winnowing. (a) False (b) True
38. 38.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) evaporating (c) filtering (d) sieving
39. 39.🫗 How do we separate gravel from fine sand? (a) filtering (b) winnowing (c) handpicking (d) sieving
40. 40.True or false: gravel from fine sand is done by evaporating. (a) True (b) False

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