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A shiny brown -coloured elemnt 'X' on he...

A shiny brown -coloured elemnt 'X' on heating in air becomes black in colour. Name the element 'X' and the black - coloured compound formed.

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.X. - copper.
`CuO` is the black - coloured compound formed.
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ZEN PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-QUESTION SECTION (TEXTUAL EXERCISE )
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  10. Write one equation for decomposition reactions where energy is supplie...

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  15. Explain the following in terms of gain or loss of oxygen with two exam...

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  20. Explain the following terms with one example each. rancidity.

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