What are the black solid elements in junior high school chemistry?

Answer:

C (charcoal, graphite)

Carbon (C), iron powder (Fe), ferrous oxide (FeO), charcoal (carbon black, activated carbon), copper oxide (CuO), manganese dioxide (MnO2), iron tetraoxide (Fe3O4)

Black solid Element: Toner, iron powder

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What are the black solid elements in junior high school chemistry?

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