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When water is broken down into hydrogen gas and oxygen gas is it a chemical or physical change?
Wiki User
∙ 11y ago
Chemical you are breaking down the water and it would need to under go another chemical change to become water again.
It is always chemistry which breaks down molecules (H2O) into its elements (H2 and O2)
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoIt is a chemical change, because what is left afterward is a different chemical to what you started with.
The decomposition would be 2H2O = 2H2(g) + O2(g)
Wiki User
∙ 11y agono its a chemical change
Wiki User
∙ 12y agoChemical change
Wiki User
∙ 9y agoyes
Wiki User
∙ 12y agoNo.
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