Classify the following reaction: 2h2o 2h2 + o2
a. synthesis
b. neutralization
c. decomposition
d. single replacement

The answer is: C. decomposition.

Decomposition is reaction where one substance is broken down into two or more simpler substances.

Balanced chemical reaction of water decomposition: 2H₂O → 2H₂ + O₂.

This is decomposition reaction, because from one molecule (water) two molecules (hydrogen and oxygen) are produced.

Chemical decomposition is opposite of chemical synthesis.

the answer is option a.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock