Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 435 · 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.⚖️ 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 filter material (c) the amount poured (d) the same glass
2. 2.⚖️ 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 muddy water (c) the filter material
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
4. 4.⚖️ 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) True (b) False
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) the water (d) nothing
6. 6.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
7. 7.⚖️ 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 funnel
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a balloon (d) muddy water
9. 9.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) handpicking
10. 10.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) salt from sea water (d) chaff from wheat grain
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a mirror (d) cotton or cloth
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
13. 13.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
14. 14.True or false: bran from wheat flour is done by sieving. (a) False (b) True
15. 15.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) handpicking
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) muddy water (d) sand and pebbles
17. 17.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
19. 19.🫗 Which of these is done by winnowing? (a) small stones from dal (b) bran from wheat flour (c) tea leaves from tea (d) husk from rice grain
20. 20.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a funnel (d) a mirror
22. 22.True or false: gravel from fine sand is done by evaporating. (a) False (b) True
23. 23.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
24. 24.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) mud from water (c) gravel from fine sand (d) chaff from wheat grain
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.True or false: bran from wheat flour is done by winnowing. (a) True (b) False
27. 27.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) winnowing (d) evaporating
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
29. 29.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) evaporating
30. 30.True or false: bad grains from rice is done by sieving. (a) True (b) False
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.🫗 How do we separate bran from wheat flour? (a) evaporating (b) filtering (c) sieving (d) winnowing
33. 33.🛟 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
34. 34.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) a magnet (d) a mirror
35. 35.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
36. 36.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
37. 37.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
38. 38.True or false: small stones from dal is done by filtering. (a) False (b) True
39. 39.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
40. 40.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False

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