Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 442 · 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? True or false: how clear the water is is what we measure. (a) True (b) False
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) muddy water (d) sand and pebbles
3. 3.⚖️ 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 glass (b) the filter material (c) the amount poured (d) the same funnel
4. 4.⚖️ 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
5. 5.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
6. 6.True or false: small stones from dal is done by sieving. (a) True (b) False
7. 7.⚖️ 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 amount poured (c) the same glass (d) the filter material
8. 8.🛟 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
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) a clean glass (d) a funnel
12. 12.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
13. 13.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) muddy water (d) a battery cell
15. 15.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) handpicking (d) sieving
16. 16.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bad grains from rice (c) chaff from wheat grain (d) gravel from fine sand
17. 17.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) gravel from fine sand (c) bad grains from rice (d) husk from rice grain
18. 18.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
21. 21.⚖️ 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
22. 22.True or false: yeast is needed for the muddy water filter. (a) False (b) True
23. 23.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) a clean glass (d) sand and pebbles
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) yeast (d) cotton or cloth
26. 26.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) small stones from dal (c) mud from water (d) husk from rice grain
27. 27.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) muddy water (d) a clean glass
29. 29.🔮 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
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a clean glass (c) a balloon (d) turmeric powder
31. 31.⚖️ 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
32. 32.🛟 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
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) muddy water (d) sand and pebbles
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
36. 36.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
38. 38.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
39. 39.True or false: tea leaves from tea is done by filtering. (a) True (b) False
40. 40.True or false: a mirror is needed for the muddy water filter. (a) False (b) True

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