The term that best relates to Ben's observation is the rate of reaction.
The rate of reaction is a term used to describe how quickly a reaction occurs. In reactions, reactants react to form products. Thus, the rate of a reaction refers to the rate of disappearance of reactants or the rate of appearance of products.
The burning of wood is a form of reaction because the wood burns to produce products such as ashes, heat, smoke, and gases. Thus, the rate of disappearance of the wood would be the rate of the reaction.
Therefore, the term that best relates to Ben's observation is rate of reaction.
More on rate of reactions can be found here: https://brainly.com/question/8592296
#SPJ1
