Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 960 · 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: a battery cell is not needed for the muddy water filter. (a) False (b) True
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
3. 3.⚖️ 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
4. 4.🫗 How do we separate bad grains from rice? (a) sieving (b) winnowing (c) filtering (d) handpicking
5. 5.⚖️ 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 filter material (c) the same muddy water (d) the same glass
6. 6.🫗 Which of these is done by handpicking? (a) small stones from dal (b) chaff from wheat grain (c) tea leaves from tea (d) salt from sea water
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a battery cell (d) cotton or cloth
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
10. 10.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
11. 11.True or false: yeast is needed for the muddy water filter. (a) False (b) True
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.⚖️ 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
15. 15.True or false: gravel from fine sand is done by sieving. (a) True (b) False
16. 16.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) tea leaves from tea (c) salt from sea water (d) bad grains from rice
17. 17.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) small stones from dal (c) tea leaves from tea (d) husk from rice grain
18. 18.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
19. 19.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
20. 20.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
22. 22.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) sugar from sugar water (d) mud from water
23. 23.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) salt from sea water (c) mud from water (d) bran from wheat flour
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a funnel (d) yeast
26. 26.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, always (d) yes, if it is cold
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) a magnet (d) muddy water
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) a balloon
29. 29.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a magnet (c) muddy water (d) sand and pebbles
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) cotton or cloth (c) a clean glass (d) sand and pebbles
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
33. 33.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
34. 34.True or false: small stones from dal is done by sieving. (a) False (b) True
35. 35.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
36. 36.True or false: a magnet is 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? Which of these is the one thing we change? (a) the same funnel (b) the amount poured (c) the filter material (d) how clear the water is
38. 38.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
40. 40.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) bran from wheat flour (c) husk from rice grain (d) small stones from dal

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