Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 667 · 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 should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
2. 2.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) mud from water (c) small stones from dal (d) chaff from wheat grain
3. 3.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
4. 4.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
5. 5.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a battery cell (d) muddy water
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) turmeric powder (d) a clean glass
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
9. 9.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
10. 10.True or false: mud from water is done by sieving. (a) False (b) True
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) cotton or cloth (c) muddy water (d) a clean glass
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) cotton or cloth (d) sand and pebbles
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) yeast (d) a funnel
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
18. 18.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) sugar from sugar water (c) mud from water (d) tea leaves from tea
19. 19.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
20. 20.⚖️ 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) True (b) False
21. 21.🔮 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) no, salt passes through (d) it turns to sugar
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the amount poured
23. 23.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) wash hands afterwards (d) lick your fingers
24. 24.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a magnet (d) cotton or cloth
26. 26.True or false: salt from sea water is done by handpicking. (a) False (b) True
27. 27.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: salt from sea water is done by sieving. (a) True (b) False
29. 29.🧺 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) sand and pebbles
30. 30.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
31. 31.True or false: bad grains from rice is done by filtering. (a) True (b) False
32. 32.⚖️ 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 change it (c) we measure it
33. 33.⚖️ 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) the same funnel (c) how clear the water is
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.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) turmeric powder (d) cotton or cloth
36. 36.🫗 Which of these is done by filtering? (a) bad grains from rice (b) sugar from sugar water (c) tea leaves from tea (d) chaff from wheat grain
37. 37.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
39. 39.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) sugar from sugar water (c) husk from rice grain (d) small stones from dal
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False

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