Question

1. What type of reaction is this?

Answer 1

Answer:

B if you meant $H_{2}O$->$H_{2} +O_{2}$

Explanation:

A. Synthesis: reaction where two or more reactants combine to form one product. A+B->AB

B. Decomposition: reaction where a single compound reacts to form more than one product. AB-> A+B

C. Combustion: any reaction in which a substance reacts with oxygen gas. (needs $O_{2}$)

D. Single replacement: a type of reaction where one element replaces a similar element within a compound. Reaction is always an element and a compound.

E. Double replacement: a type of reaction where the ions of two compounds exchange places in an aqueous solution to form two new compounds. AB+CD->AD+CD

Answer 2

It is a decomposition reaction I think