Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 175 · 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 sand and pebbles for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
4. 4.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
5. 5.🧺 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 battery cell (d) sand and pebbles
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) a funnel (d) sand and pebbles
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) leaves pass through (d) both stay behind
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) salt from sea water (c) bad grains from rice (d) mud from water
10. 10.True or false: husk from rice grain is done by filtering. (a) True (b) False
11. 11.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet
12. 12.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
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 keep it the same (b) we measure it (c) we change it
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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ 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) False (b) True
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 magnet (d) cotton or cloth
18. 18.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.⚖️ 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 measure it (c) we change it
21. 21.⚖️ 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
22. 22.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
23. 23.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
24. 24.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) winnowing (d) handpicking
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) cotton or cloth (d) sand and pebbles
26. 26.True or false: yeast is needed for the muddy water filter. (a) True (b) False
27. 27.⚖️ 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
28. 28.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) salt from sea water (c) husk from rice grain (d) small stones from dal
29. 29.🫗 Which of these is done by evaporating? (a) sugar from sugar water (b) bran from wheat flour (c) gravel from fine sand (d) small stones from dal
30. 30.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
31. 31.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) salt from sea water (c) mud from water (d) chaff from wheat grain
32. 32.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) handpicking (d) evaporating
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a battery cell (d) cotton or cloth
34. 34.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
35. 35.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
37. 37.⚖️ 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) how clear the water is (c) the same funnel
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a battery cell (d) a clean glass
39. 39.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: salt from sea water is done by evaporating. (a) False (b) True

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