Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 756 · 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 same glass is the one thing we change. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) cotton or cloth (d) a battery cell
4. 4.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) muddy water (c) turmeric powder (d) a magnet
5. 5.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
6. 6.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
8. 8.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
9. 9.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
10. 10.🫗 How do we separate tea leaves from tea? (a) filtering (b) sieving (c) winnowing (d) handpicking
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) cotton or cloth (d) a clean glass
12. 12.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
13. 13.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a clean glass (d) yeast
15. 15.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
16. 16.⚖️ 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 same glass (c) how clear the water is
17. 17.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) turmeric powder (d) muddy water
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a magnet (c) muddy water (d) cotton or cloth
20. 20.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.⚖️ 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 same muddy water (c) the same funnel (d) the amount poured
24. 24.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
25. 25.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) handpicking (d) filtering
26. 26.⚖️ 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 same glass (c) the filter material (d) the same funnel
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a mirror (c) a battery cell (d) sand and pebbles
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) sand and pebbles (d) yeast
30. 30.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
33. 33.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
34. 34.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
36. 36.True or false: bran from wheat flour is done by sieving. (a) False (b) True
37. 37.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) tea leaves from tea (c) bad grains from rice (d) chaff from wheat grain
38. 38.⚖️ 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
39. 39.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) filtering (d) sieving
40. 40.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) tea leaves from tea (c) sugar from sugar water (d) small stones from dal

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