Respuesta :
I would agree with the second one, not the first. You can't always see the chemical reaction, and it isn't always sudden. But the second claim is true.
The chemical reaction claim for the combination of two or more reactants in the reaction is true.
The chemical reaction is defined as the formulation of new products with the combination of reactants or dissociation under specific conditions.
What end product is formed in Chemical reactions?
The chemical reactions take place with the change in the chemical composition and the structure of the end product.
The changes in the reaction are always not visible characteristics.
Thus, the claim of all the reactions are immediate and clearly visible is not true.
The new substance formed in the chemical reaction is a change in the structure and the composition of the reactants. Ina chemical reaction, one or more reactants can be combined.
Thus, the chemical reaction claim for the combination of two or more reactants in the reaction is true.
Learn more about a chemical reaction, here:
https://brainly.com/question/6876669