Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 501 · 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.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) a clean glass
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the amount poured (c) the filter material (d) the same funnel
4. 4.🫗 How do we separate mud from water? (a) handpicking (b) winnowing (c) filtering (d) sieving
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) a battery cell
6. 6.🫗 How do we separate bran from wheat flour? (a) handpicking (b) sieving (c) evaporating (d) winnowing
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) yeast (d) a funnel
8. 8.True or false: yeast is needed for the muddy water filter. (a) True (b) False
9. 9.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Do we need a balloon 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 same muddy water (b) the filter material (c) the same funnel (d) how clear the water is
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
13. 13.⚖️ 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
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
15. 15.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) tea leaves from tea (c) husk from rice grain (d) salt from sea water
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a balloon (c) a funnel (d) a clean glass
19. 19.🔮 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) yes, all of it (d) no, salt passes through
20. 20.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
21. 21.⚖️ 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
22. 22.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
24. 24.True or false: yeast is not 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? True or false: the amount poured is kept the same. (a) True (b) False
26. 26.🫗 How do we separate sugar from sugar water? (a) filtering (b) sieving (c) handpicking (d) evaporating
27. 27.⚖️ 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
28. 28.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
29. 29.🧺 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) yeast
30. 30.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
31. 31.🫗 How do we separate bad grains from rice? (a) evaporating (b) handpicking (c) filtering (d) winnowing
32. 32.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bran from wheat flour (c) sugar from sugar water (d) mud from water
33. 33.⚖️ 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
34. 34.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) gravel from fine sand (c) salt from sea water (d) bad grains from rice
35. 35.⚖️ 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) True (b) False
36. 36.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) a clean glass (d) cotton or cloth
38. 38.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
39. 39.🫗 How do we separate chaff from wheat grain? (a) filtering (b) sieving (c) evaporating (d) winnowing
40. 40.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True

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