Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 509 · 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.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
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? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the filter material
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) muddy water (d) a balloon
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) muddy water (d) a battery cell
8. 8.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
9. 9.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
10. 10.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same glass (c) the same funnel (d) the filter material
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) cotton or cloth (d) a funnel
13. 13.⚖️ 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
14. 14.🫗 Which of these is done by sieving? (a) salt from sea water (b) tea leaves from tea (c) gravel from fine sand (d) bad grains from rice
15. 15.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the filter adds soap (d) the water evaporates
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🫗 How do we separate mud from water? (a) evaporating (b) sieving (c) filtering (d) handpicking
19. 19.⚖️ 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 filter material (c) the same glass
20. 20.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) mud from water (c) chaff from wheat grain (d) bad grains from rice
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a balloon (d) muddy water
22. 22.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) muddy water (d) turmeric powder
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it turns to sand (d) it floats on top
25. 25.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) sugar from sugar water (c) tea leaves from tea (d) husk from rice grain
26. 26.🫗 How do we separate gravel from fine sand? (a) winnowing (b) evaporating (c) handpicking (d) sieving
27. 27.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) bad grains from rice (c) gravel from fine sand (d) mud from water
28. 28.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
29. 29.⚖️ 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
30. 30.True or false: small stones from dal is done by sieving. (a) True (b) False
31. 31.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
32. 32.🫗 Which of these is done by winnowing? (a) salt from sea water (b) husk from rice grain (c) gravel from fine sand (d) bad grains from rice
33. 33.⚖️ 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
34. 34.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
35. 35.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
36. 36.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
37. 37.⚖️ 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) False (b) True
38. 38.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) small stones from dal (c) bran from wheat flour (d) bad grains from rice
39. 39.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is

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