Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 936 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) turmeric powder (d) muddy water
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it dissolves (d) it sinks to the bottom
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) yeast (c) a balloon (d) turmeric powder
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a funnel (c) turmeric powder (d) a balloon
7. 7.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) handpicking (d) sieving
8. 8.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ 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 filter material (c) the amount poured (d) the same muddy water
10. 10.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a clean glass (c) cotton or cloth (d) muddy water
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
13. 13.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
14. 14.True or false: salt from sea water is done by winnowing. (a) False (b) True
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a balloon (d) a magnet
16. 16.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
17. 17.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
18. 18.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
20. 20.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 How do we separate sugar from sugar water? (a) handpicking (b) winnowing (c) filtering (d) evaporating
22. 22.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
23. 23.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.True or false: gravel from fine sand is done by sieving. (a) False (b) True
26. 26.True or false: turmeric powder 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? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
29. 29.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
30. 30.⚖️ 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 muddy water
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
32. 32.🫗 Which of these is done by filtering? (a) mud from water (b) sugar from sugar water (c) bad grains from rice (d) chaff from wheat grain
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) no, germs may stay (d) yes, always
36. 36.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) salt from sea water (c) tea leaves from tea (d) bad grains from rice
37. 37.True or false: salt from sea water is done by evaporating. (a) True (b) False
38. 38.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) cotton or cloth (d) muddy water
40. 40.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True

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