Is My Hand Bleeding?
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Is that a freaking sheet of litmus paper
학교에서 이걸로 발표하면 재밌겠다 ㅋㅋ
It's just paper or whatever that changes color wen it touches water I have a cup like this
Heat sensitive paper
Fe3 + KSCN ——> [Fe(SCN)6]^-3
Blood red colour
Maybe paper that reacts to heat and the us spraying warm water on his hand
Potassium permanganate is on the paper and reacts with water to give the bloody red color 😊
Thermo croma pigments
Kolor kut on a pad?