Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 534 · 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) True (b) False
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.⚖️ 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) how clear the water is (c) the filter material
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) a clean glass (d) muddy water
5. 5.🫗 How do we separate salt from sea water? (a) handpicking (b) evaporating (c) sieving (d) winnowing
6. 6.True or false: mud from water is done by filtering. (a) True (b) False
7. 7.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) winnowing (d) evaporating
8. 8.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
9. 9.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
10. 10.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
11. 11.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
13. 13.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) gravel from fine sand (c) mud from water (d) bran from wheat flour
14. 14.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
15. 15.⚖️ 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 filter material (d) the same glass
16. 16.🫗 How do we separate tea leaves from tea? (a) handpicking (b) evaporating (c) sieving (d) filtering
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.🧺 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 clean glass (d) a magnet
19. 19.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
20. 20.🛟 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
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a clean glass (d) sand and pebbles
22. 22.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
23. 23.🫗 Which of these is done by filtering? (a) husk from rice grain (b) mud from water (c) chaff from wheat grain (d) bran from wheat flour
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) yeast (c) a balloon (d) turmeric powder
25. 25.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) sugar from sugar water (c) gravel from fine sand (d) bad grains from rice
26. 26.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
27. 27.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) bran from wheat flour (c) salt from sea water (d) small stones from dal
28. 28.True or false: bad grains from rice is done by handpicking. (a) True (b) False
29. 29.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: bran from wheat flour is done by sieving. (a) False (b) True
31. 31.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
32. 32.🔍 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
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) sand and pebbles (d) cotton or cloth
35. 35.🫗 How do we separate bran from wheat flour? (a) winnowing (b) sieving (c) handpicking (d) evaporating
36. 36.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
38. 38.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a magnet (d) turmeric powder
40. 40.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed

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