Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 902 · 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 same muddy water
2. 2.⚖️ 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 glass (b) the same muddy water (c) the filter material (d) the amount poured
3. 3.True or false: yeast is needed for the muddy water filter. (a) True (b) False
4. 4.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
6. 6.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) muddy water (d) cotton or cloth
8. 8.True or false: mud from water is done by evaporating. (a) True (b) False
9. 9.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
10. 10.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
11. 11.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) a clean glass (d) muddy water
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) a funnel (d) a clean glass
14. 14.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (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) how clear the water is (c) the same funnel
17. 17.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
21. 21.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same funnel (c) how clear the water is (d) the same muddy water
25. 25.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) sand and pebbles (d) a mirror
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) a mirror (d) a balloon
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) sand and pebbles (d) a funnel
30. 30.⚖️ 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 change it (c) we keep it the same
31. 31.True or false: mud from water is done by handpicking. (a) False (b) True
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 filter material (c) the amount poured
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
34. 34.🫗 How do we separate salt from sea water? (a) filtering (b) winnowing (c) evaporating (d) handpicking
35. 35.True or false: gravel from fine sand is done by winnowing. (a) True (b) False
36. 36.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves pass through (d) leaves stay behind
38. 38.True or false: tea leaves from tea is done by filtering. (a) True (b) False
39. 39.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
40. 40.🫗 How do we separate gravel from fine sand? (a) evaporating (b) filtering (c) sieving (d) handpicking

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