Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 745 · 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.🫗 How do we separate gravel from fine sand? (a) winnowing (b) filtering (c) sieving (d) evaporating
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
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) it turns to sand (d) yes, all of it
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a funnel (d) a mirror
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
9. 9.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) a clean glass (d) muddy water
11. 11.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) salt from sea water (c) chaff from wheat grain (d) husk from rice grain
12. 12.⚖️ 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
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the water (d) the mud
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a balloon (d) a clean glass
16. 16.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
17. 17.🫗 How do we separate bad grains from rice? (a) filtering (b) handpicking (c) sieving (d) evaporating
18. 18.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
19. 19.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
20. 20.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
21. 21.True or false: small stones from dal is done by sieving. (a) False (b) True
22. 22.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) small stones from dal (c) mud from water (d) bad grains from rice
23. 23.True or false: gravel from fine sand is done by sieving. (a) True (b) False
24. 24.🛟 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
25. 25.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a magnet (d) a mirror
26. 26.⚖️ 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 measure it (c) we change it
27. 27.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) mud from water (c) gravel from fine sand (d) salt from sea water
28. 28.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
29. 29.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
31. 31.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a mirror (d) muddy water
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a funnel (d) a balloon
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) sand and pebbles (d) a funnel
35. 35.⚖️ 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) the amount poured (c) how clear the water is
36. 36.🛟 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
37. 37.True or false: tea leaves from tea is done by filtering. (a) True (b) False
38. 38.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) handpicking (d) filtering
39. 39.🫗 Which of these is done by sieving? (a) small stones from dal (b) bran from wheat flour (c) chaff from wheat grain (d) mud from water
40. 40.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False

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