Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 718 · 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: the filter material is what we measure. (a) False (b) True
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
3. 3.🛟 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
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a funnel (c) a balloon (d) yeast
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) a clean glass (d) sand and pebbles
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) cotton or cloth (d) a clean glass
8. 8.⚖️ 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
9. 9.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
10. 10.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
11. 11.⚖️ 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
12. 12.True or false: mud from water is done by evaporating. (a) False (b) True
13. 13.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) filtering (d) evaporating
14. 14.True or false: salt from sea water is done by evaporating. (a) False (b) True
15. 15.⚖️ 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
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
17. 17.⚖️ 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
18. 18.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
19. 19.🫗 How do we separate mud from water? (a) handpicking (b) sieving (c) filtering (d) winnowing
20. 20.🫗 How do we separate sugar from sugar water? (a) filtering (b) handpicking (c) evaporating (d) sieving
21. 21.⚖️ 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) how clear the water is (c) the filter material
22. 22.True or false: bad grains from rice is done by sieving. (a) True (b) False
23. 23.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
24. 24.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
25. 25.⚖️ 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
26. 26.🫗 How do we separate tea leaves from tea? (a) evaporating (b) sieving (c) winnowing (d) filtering
27. 27.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) husk from rice grain (c) tea leaves from tea (d) sugar from sugar water
28. 28.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
29. 29.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a magnet (d) cotton or cloth
31. 31.True or false: husk from rice grain is done by winnowing. (a) False (b) True
32. 32.True or false: yeast is needed for the muddy water filter. (a) True (b) False
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a funnel (d) a mirror
34. 34.⚖️ 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
35. 35.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
36. 36.🫗 How do we separate bran from wheat flour? (a) handpicking (b) filtering (c) winnowing (d) sieving
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) yeast (c) a magnet (d) a balloon
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a balloon (d) sand and pebbles
39. 39.True or false: salt from sea water is done by handpicking. (a) False (b) True
40. 40.True or false: tea leaves from tea is done by winnowing. (a) False (b) True

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