Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 737 · 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? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
2. 2.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) filtering (c) evaporating (d) winnowing
3. 3.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) yes, all of it (d) it turns to sand
4. 4.🫗 How do we separate tea leaves from tea? (a) handpicking (b) filtering (c) sieving (d) evaporating
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) muddy water (d) a battery cell
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
7. 7.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a balloon (d) a funnel
9. 9.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
10. 10.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
11. 11.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.⚖️ 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
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) the filter material (d) how clear the water is
15. 15.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) bad grains from rice (c) chaff from wheat grain (d) salt from sea water
16. 16.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a clean glass (d) yeast
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
20. 20.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
21. 21.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
22. 22.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) gravel from fine sand (c) husk from rice grain (d) sugar from sugar water
23. 23.🫗 How do we separate gravel from fine sand? (a) handpicking (b) winnowing (c) evaporating (d) sieving
24. 24.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
25. 25.True or false: salt from sea water is done by sieving. (a) True (b) False
26. 26.🫗 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
27. 27.🫗 How do we separate sugar from sugar water? (a) sieving (b) handpicking (c) winnowing (d) evaporating
28. 28.⚖️ 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
29. 29.⚖️ 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 same muddy water (c) the filter material
30. 30.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a funnel (d) sand and pebbles
32. 32.⚖️ 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 same glass (c) the filter material
33. 33.⚖️ 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
34. 34.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
35. 35.🫗 How do we separate salt from sea water? (a) sieving (b) handpicking (c) filtering (d) evaporating
36. 36.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) yeast (d) a mirror
38. 38.⚖️ 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
39. 39.🫗 How do we separate mud from water? (a) filtering (b) evaporating (c) winnowing (d) sieving
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same funnel (c) the same muddy water (d) the amount poured

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