Q: What are chemical reactions represented by?


Read this paragraph and choose the correct option from the provided answers:

A chemical reaction occurs when some substances change chemically to other substances. Chemical reactions are represented by chemical equations. Consider a simple chemical reaction, the burning of methane. In this reaction, methane (CH 4 ) combines with oxygen (O 2 ) in the air and produces carbon dioxide (CO 2 ) and water vapor (H 2 O). The reaction is represented by the following chemical equation:.

 Choices:

- liquid equations

- nuclear equations

- carbon equations

- chemical equations


A:
chemical equations