the decomposition of water into hydrogen and oxygen gas is an example of a reaction.
the decomposition of water into hydrogen and oxygen gas is an example of a reaction.
Answer
Brief Explanations:
In a decomposition reaction, a single compound breaks down into two or more simpler substances. Water ($H_2O$) decomposing into hydrogen ($H_2$) and oxygen ($O_2$) gas fits this definition as one compound is splitting into two different gases.
Answer:
decomposition