Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 650 · 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.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) the water (d) nothing
2. 2.⚖️ 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
3. 3.🫗 Which of these is done by sieving? (a) salt from sea water (b) sugar from sugar water (c) tea leaves from tea (d) gravel from fine sand
4. 4.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
5. 5.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
8. 8.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
9. 9.🫗 How do we separate bad grains from rice? (a) winnowing (b) handpicking (c) evaporating (d) filtering
10. 10.⚖️ 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
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
15. 15.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) salt from sea water (c) bad grains from rice (d) bran from wheat flour
16. 16.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a clean glass (d) a battery cell
18. 18.True or false: small stones from dal is done by filtering. (a) True (b) False
19. 19.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
20. 20.🫗 Which of these is done by sieving? (a) small stones from dal (b) bad grains from rice (c) salt from sea water (d) bran from wheat flour
21. 21.🔮 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
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a magnet (d) muddy water
23. 23.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
25. 25.🫗 How do we separate gravel from fine sand? (a) sieving (b) evaporating (c) filtering (d) winnowing
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) yeast (d) a clean glass
27. 27.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
28. 28.⚖️ 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
29. 29.⚖️ 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 same funnel (d) the same muddy water
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) cotton or cloth
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a funnel (d) a mirror
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the amount poured (d) the same muddy water
33. 33.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
34. 34.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) sieving (d) filtering
37. 37.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
38. 38.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) sieving (d) evaporating
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
40. 40.⚖️ 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 amount poured (c) how clear the water is

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