“…Causal reasoning involves understanding cause-and-effect relationships between different variables and why they contribute to the outcome of a chemical phenomenon. Causal reasoning is, therefore, concerned with understanding principles or factors that are driving a reaction, rather than the specific steps or processes involved (diSessa, 1993;Carey, 1995;Russ et al, 2008;Cooper et al, 2016). Mechanistic reasoning focuses on understanding how a chemical reaction proceeds at the molecular level, including the mechanistic steps that convert the reactants into the products.…”