Can someone give me an interesting and simple chemistry extended essay topic?

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AKOP1

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Please I had a really cool one about polystyrene cups, but it resulted too difficult... please help! 10 POINTS TO BEST ANSWER!
 
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I just did my essay, and I did it on different materials taking dye. I got two different types of socks (three each): one mainly polyester, one mainly cotton, and I got a dye at the store, dyed them all, and then washed one sock once, another twice and left one alone. I then compared the colors and wrote my essay about it.
 
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